Monolith by Monoprice Desktop Balanced Headphone Amplifier and DAC with THX AAA Technology (Dual AKM 4493 DACs & Dual AAA-788 Modules)
Product # 24459
$499.99
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Questions and Answers
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Browse 179 questions
Browse 179 questions
and 214 answers
When using USB input, why does unit always display 48KHz regardless of source?
A shopper
on May 29, 2019
BEST ANSWER: Not sure about Macs, but for Windows, make sure to install the provided XMOS driver from the product page, check that you have the latest firmware, and most importantly, in the Device Properties window Advanced tab, make sure to enable both boxes regarding Exclusive Mode so WASAPI compatible software can enforce the correct output to match the source. And some apps (Tidal) need you to dig into their settings to enable using exclusive mode.
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- Jeff Q on May 29, 2019
- Purchased on Apr 5, 2019
BEST ANSWER: Not sure about Macs, but for Windows, make sure to install the provided XMOS driver from the product page, check that you have the latest firmware, and most importantly, in the Device Properties window Advanced tab, make sure to enable both boxes regarding Exclusive Mode so WASAPI compatible software can enforce the correct output to match the source. And some apps (Tidal) need you to dig into their settings to enable using exclusive mode.
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- Jeff Q on May 29, 2019
- Purchased on Apr 5, 2019
The amp/dac can output at least 192khz I believe. I had the same issue so I had to go to sounds-> thx aaa amp/dac-> right click-> properties-> then you can select the bitrate/samplerate you want your PC to output to the amp/dac. When I'm outputting via Tidal it displays 192khz and outputting via foobar will the sample rate of the file matches the display. Also you may need to update the firmware of the amp/dac if you're still having issues.
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- Robert Q on May 29, 2019
- Purchased on May 5, 2019
Right-click the Speaker icon in your system tray and click Playback devices.
Select the XMOS XHRA-2HPA speaker, then click Properties.
Click the Advanced tab.
Click the drop-down and it will show you the sample rate and bit depths options
Select the XMOS XHRA-2HPA speaker, then click Properties.
Click the Advanced tab.
Click the drop-down and it will show you the sample rate and bit depths options
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- Hugo D on May 31, 2019
- Purchased on Apr 14, 2019
For my set up - I'm using an iPad Pro, with usb-c to usb-b to the monolith. With Apple Music it's displaying 48kHz. With Amazon Music, however it's displaying 192kHz.
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- Nam S on Dec 26, 2020
- Purchased on Nov 25, 2020
For Mac I use Bit Perfect as recommended by Paul McGowan of PS Audio. Look for the PS Audio guide “How to Build a Music Server”.
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- Matt M on Apr 7, 2020
- Purchased on Apr 9, 2019
I don’t have this issue. Could be your sources only output that bitrate. On my windows pc I have mine set to 192k
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- Chris T on May 29, 2019
- Purchased on Apr 12, 2019
What computer (MAC/Windows) are you using and then what program are you using? (Tidal, Spotify...)
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- New User U on May 29, 2019
- Purchased on Apr 8, 2019
Windows 10, either the included Groove Music or Foobar 2000. Flac and MP3 files. Downloaded the xmos USB driver from here, it and the hardware always display 48KHz.
Not sure where my first reply went, but I am using windows 10, playing flac and mp3 files on the included groove music or foobar 2000.
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On the HOME screen, there is a persistent "H" just to the right of the sound DB level. What does it mean?
A shopper
on Feb 9, 2021
BEST ANSWER: It indicates the output mode you are currently on. 'H' means "Headphone" and refers to the XLR or 1/4" jack on the front of the unit, whereas the other mode 'L' means "Line-Out", the red and white aux jacks at the back of the unit. You can switch between the two modes in the settings menu.
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- Keanan A on Feb 10, 2021
- Purchased on Apr 22, 2020
BEST ANSWER: It indicates the output mode you are currently on. 'H' means "Headphone" and refers to the XLR or 1/4" jack on the front of the unit, whereas the other mode 'L' means "Line-Out", the red and white aux jacks at the back of the unit. You can switch between the two modes in the settings menu.
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- Keanan A on Feb 10, 2021
- Purchased on Apr 22, 2020
The "H" is to signify the output mode. In Settings, there are two options: H is for the front panel headphones & L is for line out jacks in the rear.
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- coreypine on Feb 9, 2021
- Purchased on May 7, 2020
Most people would interpret it as High, but with this unit it means "headphone out". L means "Line out" hope that helps.
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- Arthur F on Feb 10, 2021
- Purchased on Apr 22, 2020
The 'H' is for headphones. If you change the output mode in settings to line out, this will change to an 'L'.
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- Greg D on Feb 10, 2021
- Purchased on Apr 19, 2020
Headphones is what that means. If you switch output to line, it will become a big L.
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- Neil Z on Feb 10, 2021
- Purchased on Jun 7, 2020
It means Headphone you can change to L which would be line
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- Matthew K on Feb 9, 2021
- Purchased on May 21, 2020
I believe it stands for headphones as opposed to speakers.
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- Rafael Desquitado J on Feb 9, 2021
- Purchased on Jun 4, 2020
Headphones I think (not high gain).
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- Nicholas F on Feb 9, 2021
- Purchased on Jul 24, 2020
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My unit came with firmware 1.04 pre-installed. But the latest firmware listed on the product page is 1.03. should I update to that?
A shopper
on Oct 18, 2019
BEST ANSWER: I would not "update" it if it came with a higher version. Mine came with 1.01 and I did the update.
According to the official changelogs posted, all 1.03 does is fix an issue with the phase of the back outputs.
As 1.04 is higher than that, I would expect it to include those fixes.
According to the official changelogs posted, all 1.03 does is fix an issue with the phase of the back outputs.
As 1.04 is higher than that, I would expect it to include those fixes.
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- Mark D on Oct 18, 2019
- Purchased on Apr 5, 2019
BEST ANSWER: I would not "update" it if it came with a higher version. Mine came with 1.01 and I did the update.
According to the official changelogs posted, all 1.03 does is fix an issue with the phase of the back outputs.
As 1.04 is higher than that, I would expect it to include those fixes.
According to the official changelogs posted, all 1.03 does is fix an issue with the phase of the back outputs.
As 1.04 is higher than that, I would expect it to include those fixes.
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- Mark D on Oct 18, 2019
- Purchased on Apr 5, 2019
why would you update to an older version? If I were you I would stick with the 1.04. Unless you are having issues, then contact customer support.
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- VIKRANT S on Oct 18, 2019
- Purchased on Feb 26, 2019
Definitely not, stick with 1.04. If you're curious about the changes, I would contact Monoprice directly.
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- New User U on Oct 18, 2019
- Purchased on Nov 16, 2018
I would keep 1.04, it will likely show up on the product page soon. Your unit was updated in production
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- New User U on Oct 19, 2019
- Purchased on Feb 26, 2019
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Will it drive a 250 ohm headphones (Beyerdynamic DT 1990 Pro)?
New User U
on Jun 15, 2020
BEST ANSWER: Absolutely! This drives my Sennheiser HD 6XX's (300 ohm) with headroom to spare!
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- Greg D on Jun 15, 2020
- Purchased on Apr 19, 2020
BEST ANSWER: Absolutely! This drives my Sennheiser HD 6XX's (300 ohm) with headroom to spare!
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- Greg D on Jun 15, 2020
- Purchased on Apr 19, 2020
The DT 1990 Pro offer only single ended connection. The spec sheet says the amp is capable of 150mW into 300 Ohms, and 290mW into 150 Ohms. So let's just take 150mW as a minimum it will be able to deliver into 250 Ohms of the DT 1990 Pro. The headphone will produce an SPL of 102dB (which is VERY loud) given only 1mW of power. This would give you nearly 124dB of SPL with the amp on full power. And general health advice says, that you should not listen to anything that loud for more than a few seconds if you don't wish to suffer permanent hearing loss. So yeah, plenty power here. I myself use the HD600 with it, wich is 300 Ohms and has a similar efficiency to the Beyer headphone, and it sounds very good, no distortion or anything. So go for it. And read up on power ratings and the dB (decibel) scale to make your life easier in the future.
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- New User U on Jun 15, 2020
- Purchased on May 2, 2020
It has more than enough power to drive those. It will drive anything out there. Drives my HD800S just fine.
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- Arthur F on Jun 15, 2020
- Purchased on Apr 22, 2020
Yes, it does. I own the 1990 Pro and it's definitely more than enough power!
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- Simone M on Jun 15, 2020
- Purchased on Apr 22, 2020
Yes, with a lot of room to spare.
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- Brandon B on Jun 15, 2020
- Purchased on Jun 2, 2020
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Is a USB cable included?
New User U
on Dec 26, 2020
BEST ANSWER: Yes. I just checked my Monolith box, which I left the accessories in that I didn't need. There is still a USB cable in there, wrapped up in a black twist-tie.
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- Peter K on Dec 26, 2020
- Purchased on Nov 28, 2020
BEST ANSWER: Yes. I just checked my Monolith box, which I left the accessories in that I didn't need. There is still a USB cable in there, wrapped up in a black twist-tie.
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- Peter K on Dec 26, 2020
- Purchased on Nov 28, 2020
Yes, USB cable for connecting to a computer is included
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- Patrick P on Dec 26, 2020
- Purchased on Nov 30, 2020
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what's the output impedance of this amp?
A shopper
on Sep 24, 2017
Output impedance of AAA-788 is very low! It's less than 0.05 Ohms at 1 kHz.
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- Andrew M on Sep 21, 2018
Staff - it seems that you answered the supported headphone impedance, but what most of us want to know is the actual output impedance of the headphone out on this unit. Will it be below 1ohm so we can use it with more sensitive IEMS and the like?
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- Nick B on Dec 29, 2017
Output impedance is 1.3 ohms on 1/4 jack. This just got reviewed on May 6, 2019 at ASR and it is pretty.
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- New User U on May 7, 2019
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Does this unit work with iOS devices with lightning connectors, like iPad Pro and iPhone?
New User U
on Jun 8, 2019
BEST ANSWER: Yes, you need a usb ios lightning to USB adapter also known as "Lightning To USB Camera Adapter Cable With USB Power Interface White For iPhone 8/8Plus/7/7Plus/6/6S/6Plus and iPad" I can't link you directly of course.
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- Artis H on May 12, 2020
- Purchased on May 6, 2020
BEST ANSWER: Yes, you need a usb ios lightning to USB adapter also known as "Lightning To USB Camera Adapter Cable With USB Power Interface White For iPhone 8/8Plus/7/7Plus/6/6S/6Plus and iPad" I can't link you directly of course.
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- Artis H on May 12, 2020
- Purchased on May 6, 2020
like most USB DAC's this has USB B input on the back. I have never seen a USB B to lightning cord. so its going to be difficult at best
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- matthew c on Jun 8, 2019
- Purchased on Apr 16, 2019
In order to work with IOS device you would need to connect via lightning connector to USB b cable or a USB interface.
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- david s on Jun 9, 2019
- Purchased on Apr 28, 2019
Only if you use an adapter to convert the signal to optical or USB then use a USB A to B connector.
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- Jason W on Jun 8, 2019
- Purchased on Feb 7, 2019
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Are there gain or impedance levels on this? If so how do you switch between them? I do not see it in the menu settings or the manual.
Michael G
on Jul 30, 2019
BEST ANSWER: No there are not gain settings. I have read some report there is slight noise with very sensitive IEMs; some have solved this grounding the case; some with impedance cables - which largely provide the same as a gain switch. I use mine with full-size headphones of mixed sensitives as well as a pre-amp and it is black as black for me but I don't have anything extremely sensitive.
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- New User U on Jul 31, 2019
- Purchased on Feb 26, 2019
BEST ANSWER: No there are not gain settings. I have read some report there is slight noise with very sensitive IEMs; some have solved this grounding the case; some with impedance cables - which largely provide the same as a gain switch. I use mine with full-size headphones of mixed sensitives as well as a pre-amp and it is black as black for me but I don't have anything extremely sensitive.
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- New User U on Jul 31, 2019
- Purchased on Feb 26, 2019
No, there are not. You just turn the gain up or down depending on your headphones until the volume is good for you.
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- Mark D on Jul 30, 2019
- Purchased on Apr 5, 2019
There are no gain or impedance levels. There is just a volume control.
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- Nathan A on Jul 30, 2019
- Purchased on Apr 16, 2019
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What is the difference between this item and https://www.monoprice.com/product?p_id=39359 ?
Gleb K
on Apr 7, 2020
BEST ANSWER: This includes a DAC. The other does not. If you are using balanced headphones this would be an all in one solution for you for a fully balanced DAC and AMP combo.
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- Matt M on Apr 7, 2020
- Purchased on Apr 9, 2019
BEST ANSWER: This includes a DAC. The other does not. If you are using balanced headphones this would be an all in one solution for you for a fully balanced DAC and AMP combo.
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- Matt M on Apr 7, 2020
- Purchased on Apr 9, 2019
The unit you linked is just an amplifier. It does not have a DAC. it has no USB and no Toslink/SPDIF inputs, just analog RCA and XLR inputs
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- Sam T on Apr 7, 2020
- Purchased on Apr 29, 2019
one is just a headphone amplifier and other is a headphone amplifier with DAC
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- tak w h on Apr 7, 2020
- Purchased on Apr 26, 2019
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will this need to install a driver to use the usb input?
A shopper
on Oct 29, 2017
BEST ANSWER: For Macs you should not need one but Windows will likely require one to take full advantage of the high resolution formats. It is my understanding that The newest Creators Edition of Windows 10 includes an updated USB 2 driver that supports resolutions higher than 96Khz but I'm not sure of the extent of that support.,
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- George N on Dec 16, 2017
Come on!!! Somebody could tell me if this monoprice thx support NATIVE DSD or convert to PCM? I want to buy this tomorrow but i HAVE to know that before!! Please somebody tell me. I will use this with my macbook and audirvana plus. I have a lot of DSD files and that is the reason because is very important to me know the native dsd support!
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- New User U on Mar 28, 2019
BEST ANSWER: For Macs you should not need one but Windows will likely require one to take full advantage of the high resolution formats. It is my understanding that The newest Creators Edition of Windows 10 includes an updated USB 2 driver that supports resolutions higher than 96Khz but I'm not sure of the extent of that support.,
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- George N on Dec 16, 2017
Come on!!! Somebody could tell me if this monoprice thx support NATIVE DSD or convert to PCM? I want to buy this tomorrow but i HAVE to know that before!! Please somebody tell me. I will use this with my macbook and audirvana plus. I have a lot of DSD files and that is the reason because is very important to me know the native dsd support!
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- New User U on Mar 28, 2019
After scouring the internet for compatible xmos drivers for ASIO DSD playback, I found Thesycon trial drivers that worked, but after 30 min it starts playing a test tone every min. The only way I can stream using ASIO through the DAC is using Asio4All. It fakes a driver so your player can grab it for ASIO output. This is how I get DSD streaming, but it only works for DSD64, but not 128, probably because of bandwidth constraints.
So the standard Windows USB driver works for all PCM by DirectSound, but switching output to WASAPI doesn't properly send DSD.. Someone correct me if I'm wrong, but as far as i can tell, WASAPI and ASIO outputs need dedicated Drivers provided by the manufacturer to stream DSD to the DAC.
So the standard Windows USB driver works for all PCM by DirectSound, but switching output to WASAPI doesn't properly send DSD.. Someone correct me if I'm wrong, but as far as i can tell, WASAPI and ASIO outputs need dedicated Drivers provided by the manufacturer to stream DSD to the DAC.
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- Justin D on Jan 2, 2019
- Purchased on Dec 6, 2018
For Windows: PCM you need no driver. For DSD64 or 128 you need the included driver in the product page.
For Android: no driver is required for PCM nor DSD, is great, plug and play.
For Macs I do not know.
For Android: no driver is required for PCM nor DSD, is great, plug and play.
For Macs I do not know.
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- Manuel Antonio Gomez M on Mar 31, 2019
- Purchased on Mar 26, 2019
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Will this have a full hardware decoder for MQA?
A shopper
on Dec 12, 2017
BEST ANSWER: It will not. It will, however, have an AKM 4493 DAC. Brand new DAC from AKM.
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- New User U Staff on Dec 12, 2017
BEST ANSWER: It will not. It will, however, have an AKM 4493 DAC. Brand new DAC from AKM.
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- New User U Staff on Dec 12, 2017
interesting that's a deal breaker when there are better formats that the DAC recognizes
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- New User U on Nov 21, 2018
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How is the dirac sensaround? How is it different from not turned on?
New User U
on Nov 21, 2018
Monolith by Monoprice Desktop Balanced Headphone Amplifier and DAC with THX AAA Technology (Dual AKM 4493 DACs & Dual AAA-788 Modules)
Monolith by Monoprice Portable Headphone Amplifier and DAC with THX AAA Technology
BEST ANSWER: I think it is pretty subjective, and the effect definitely varies by track. This is why we left it as an option to be on or off. When it is off, you are just getting the pure, unaltered sound you would get if Dirac wasn't inside.
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- New User U Staff on Nov 21, 2018
BEST ANSWER: I think it is pretty subjective, and the effect definitely varies by track. This is why we left it as an option to be on or off. When it is off, you are just getting the pure, unaltered sound you would get if Dirac wasn't inside.
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- New User U Staff on Nov 21, 2018
Dirac sensaround blew me away by how good it is. It definitely is not a gimmick. It makes headphones transparent, you don’t hear left and right, just the music. Closed headphones sound better than open. My open Elears sounds the best with sensaround. It just makes them sound effortless. The biggest improvement was on my IMR R1’s, it made them sound like speakers.
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- Todd W on Nov 21, 2018
- Purchased on Nov 5, 2018
Some songs, its wonderful. Some songs -- its not wonderful. You'll be constantly turning it on and off depending on the music/genre and recording.
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- Anthony N on Nov 26, 2018
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Is the front panel display VFD or LED?
A shopper
on Dec 4, 2018
BEST ANSWER: I believe it is an LCD. Does not have th classic 7 segment numerical representation. With that said, the color choice sure makes it look like a vfd.
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- Alex Z on Dec 4, 2018
- Purchased on Nov 16, 2018
BEST ANSWER: I believe it is an LCD. Does not have th classic 7 segment numerical representation. With that said, the color choice sure makes it look like a vfd.
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- Alex Z on Dec 4, 2018
- Purchased on Nov 16, 2018
I would assume LCD, not LED but that is a bit harder to tell. The display is definitely not VFD.
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- Ian W on Dec 5, 2018
- Purchased on Nov 16, 2018
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I ran my optical cable from my Marantz CD to the Monolith Amp but getting no sound. Is there something I need to set on the amplifier from the menu that I have overlooked?
A shopper
on Feb 4, 2019
BEST ANSWER: Please make sure you are using the optical input on the input select screen.
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- New User U Staff on Feb 4, 2019
BEST ANSWER: Please make sure you are using the optical input on the input select screen.
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- New User U Staff on Feb 4, 2019
Hold the Enter [input] button for 2 seconds. Then scroll the volume button counter clockwise until to get to Optical input - Then press Enter [input].
Make sure you have your desired output to Headphones or Lineout - to hear sound.
Make sure you have your desired output to Headphones or Lineout - to hear sound.
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- Tyrone S on Feb 4, 2019
- Purchased on Jan 18, 2019
You have to press and hold the "Enter/Input" button and then select "Optical" for that input to receive audio. If you have already done that I'm not sure what else it could be.
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- Ryan W on Feb 4, 2019
- Purchased on Jan 22, 2019
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Will there be a Balanced XLR headphone cable for the M1060/c in the near future ?
Paul P
on Mar 12, 2019
Monolith by Monoprice Desktop Balanced Headphone Amplifier and DAC with THX AAA Technology (Dual AKM 4493 DACs & Dual AAA-788 Modules)
Monolith by Monoprice M1060C Over Ear Closed Back Planar Magnetic Headphones
Monolith by Monoprice M1060 Planar Headphones with 2.5mm Connectors (Open Box)
BEST ANSWER: This is not being planned at this time.
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- New User U Staff on Mar 25, 2019
BEST ANSWER: This is not being planned at this time.
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- New User U Staff on Mar 25, 2019
I got one from Periapt Cables. They are high quality and affordable
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- Brad B on Mar 12, 2019
I’m seeing a balanced cable on Amazon for the 1060C. In fact, there are both XLR and TRRS cables shown. That may do the trick.
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- Daniel O on Mar 12, 2019
- Purchased on Feb 26, 2019
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If I were to run a separate dedicated DAC with this, will that bypass the DAC functions on this AAA788? Hoping to use this only for its amp functions
A shopper
on Apr 19, 2019
BEST ANSWER: Not sure why you would want to bypass the balanced DAC inside...
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- New User U Staff on Apr 22, 2019
Guys this is not the answer, Can u be more technically on that? If I disable dirac, eq and other staff and connect another dac, what will happen? Will in convert sound from analog to digital?
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- New User U on Jun 6, 2019
Because I am have a $1300 DAC
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- New User U on Nov 7, 2019
BEST ANSWER: Not sure why you would want to bypass the balanced DAC inside...
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- New User U Staff on Apr 22, 2019
Guys this is not the answer, Can u be more technically on that? If I disable dirac, eq and other staff and connect another dac, what will happen? Will in convert sound from analog to digital?
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- New User U on Jun 6, 2019
Because I am have a $1300 DAC
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- New User U on Nov 7, 2019
Yes. You can bypass it. However, when I tried to use it with the SMSL SU8, (which sounded amazing with my Jotunheim) it sounded VERY subpar compared to the internal DAC already in the 788. I don’t know if it was synergy or the chips being that much better but since I’ve tried this, I’ve only used the internal DAC. What DAC would you pair with this?
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- New User U on Apr 19, 2019
- Purchased on Apr 8, 2019
I was going to pair it with my own SMSL SU8 as well! Was planning of pairing the SU8 with the Massdrop 789 but I missed out on the drop AGAIN. So I thought I might as well get this Monoprice instead of waiting forever for the 789. So wouldn't recommend pairing the SU8 with the Monoprice correct? Just use the Monoprice on its own?
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- New User U on Apr 20, 2019
Hi! I am planning to use my SMSL SU8 as well! Was supposed to pair it with a AAA 789 but I missed out on the drop again and I don't want to wait anymore. So you wouldn't recommend pairing the Monoprice with the SU8 right? Just run off the Monoprice on its own?
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- New User U on Apr 20, 2019
Absolutely. You can give it a shot as well when it arrives. I gave it another shot this morning, just to double check. Strongly recommend just running the 788 on it’s own. MUCH MUCH better! Lol
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- New User U on Apr 21, 2019
No but it's really tough to better it's dual AK4473s and DSP. It's 100% digital preamp and only true analog on the output side.
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- New User U on Apr 19, 2019
- Purchased on Feb 26, 2019
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Watched a review and the volume on the unit kept going after the reviewer stopped turning the knob. Has this been addressed? Here is the video I saw the issue in. https://youtu.be/BDtZ5WD8kWM?t=1362
New User U
on May 5, 2019
BEST ANSWER: We are looking into the possibility of this being addressed through firmware. I do not feel it is a showstopping issue though. Would you really turn the volume in that way while listening to headphones? I don't think you would.
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- New User U Staff on May 6, 2019
BEST ANSWER: We are looking into the possibility of this being addressed through firmware. I do not feel it is a showstopping issue though. Would you really turn the volume in that way while listening to headphones? I don't think you would.
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- New User U Staff on May 6, 2019
Unfortunately no, but to me it is not a big deal, just don't scroll the volume to fast. I asked a question to Monoprice regarding adding a 20hz region in the PEQ in a future firmware update. Hopefully they will add this along with fixing the speed of the volume control.
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- Juan G. Vizcarra L on May 5, 2019
- Purchased on Apr 18, 2019
If you turn it normally it works fine, but it's not logarithmic so to make a large change you have to turn it a lot and going fast it lags and keeps going. In my opinion it's the one and only software issue.
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- matthew c on May 5, 2019
- Purchased on Apr 16, 2019
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I have speakers with rca stereo line in. Can you tell me please which connection gives better sound and whats the difference in sound , with cables from rca line out to rca line in cable or from 4 pin balanced out to rca line in ? Thank you!
New User U
on Aug 8, 2019
For speakers I would recommend just using the rca line outs on the back of the unit. Keep in mind this unit is not meant for powering speakers, so make sure you only use this for outputting music to "powered" speakers.
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- Robert Q on Aug 9, 2019
- Purchased on May 5, 2019
No balanced outputs only rca outputs.
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- NORRIS K on Aug 8, 2019
- Purchased on Apr 29, 2019
Front panel have balanced output for headphones it can be used for balanced to rca cable , and as i understand correctly rca out is dac only and front dac and amp!
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- New User U on Aug 8, 2019
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Is there a chance on new firmware to let user adjust the screen brightness or turn it off?
Jeremy H
on Aug 5, 2020
BEST ANSWER: On firmware 1.04 (which is what mine came with) there is no option to change screen brightness. You can turn the whole unit off but not just the screen, if this is turned on then so is the screen.
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- Anthony N on Aug 6, 2020
- Purchased on Jul 24, 2020
BEST ANSWER: On firmware 1.04 (which is what mine came with) there is no option to change screen brightness. You can turn the whole unit off but not just the screen, if this is turned on then so is the screen.
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- Anthony N on Aug 6, 2020
- Purchased on Jul 24, 2020
I agree. This problem is my main grip about the unit. I have it by my bed and the light is way too bright. I have to put something if front of it to block the light.
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- Nathan A on Aug 17, 2020
- Purchased on Apr 16, 2019
Got my unit this month with firmware v1.04 and I do not see any option to adjust brightness or turn off the screen in the settings.
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- Douglas G on Aug 5, 2020
- Purchased on Jul 24, 2020
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does the Dirac Sensaround mode work when using the analog imputs or only works with the digital ones?
A shopper
on Sep 3, 2017
BEST ANSWER: The Dirac Sensaround will work on both types of inputs.
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- New User U Staff on Nov 28, 2017
BEST ANSWER: The Dirac Sensaround will work on both types of inputs.
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- New User U Staff on Nov 28, 2017
Just a note: DIRAC does not work with DSD input, just PCM.
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- Manuel Antonio Gomez M on Mar 29, 2019
- Purchased on Mar 26, 2019
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Does this product not have a pre out or line-level out? Would be nice to use the dac for speakers.
New User U
on Sep 3, 2017
BEST ANSWER: The control panel permits the amplifier output (variable) to be directed either to i) the XLR4 and 1/4" TRS, or ii) to the RCA outputs on the back. In either case it is variable level controlled by the volume knob, so it can function as a preamp for speakers.
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- Andrew M on Sep 21, 2018
BEST ANSWER: The control panel permits the amplifier output (variable) to be directed either to i) the XLR4 and 1/4" TRS, or ii) to the RCA outputs on the back. In either case it is variable level controlled by the volume knob, so it can function as a preamp for speakers.
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- Andrew M on Sep 21, 2018
It does not
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- Noel B on Sep 5, 2017
Due to customer feedback, this will now have unbalanced RCA analog line outs.
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- New User U Staff on Sep 25, 2017
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How big is this amp?
A shopper
on Sep 4, 2017
BEST ANSWER: Full dims will be made available when the product is released.
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- Dave L Staff on May 8, 2018
8.7" x 7.8" x 2.0"
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- New User U on Nov 21, 2018
BEST ANSWER: Full dims will be made available when the product is released.
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- Dave L Staff on May 8, 2018
8.7" x 7.8" x 2.0"
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- New User U on Nov 21, 2018
22x22x5 cm. Including knob.
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- Manuel Antonio Gomez M on Mar 29, 2019
- Purchased on Mar 26, 2019
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is this amp compatible with 220v 50Hz?
A shopper
on Sep 4, 2017
Do we need a different power supply for EU/220V? Will any 16.5V 1.25A do?
- Reply (1)
- New User U on Oct 4, 2018
Do we need a different power supply for EU/220V? Will any 16.5V 1.25A do?
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- New User U on Oct 4, 2018
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does it have different gain levels?
A shopper
on Sep 25, 2017
BEST ANSWER: Yes, you will be able to set different gain levels.
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- New User U Staff on Sep 26, 2017
BEST ANSWER: Yes, you will be able to set different gain levels.
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- New User U Staff on Sep 26, 2017
AS far as I know from the manual, there is no way of selecting different gain levels. Please correct me if I'm wrong and point me to the manual where this information is exposed.
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- Manuel Antonio Gomez M on Mar 29, 2019
- Purchased on Mar 26, 2019
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What are the dimensions?
A shopper
on Oct 23, 2017
BEST ANSWER: Final dimensions are not complete, but it will be relatively compact.
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- New User U Staff on Dec 12, 2017
for example, the Massdrop x THX AAA™ 789 Linear Amplifierwhich seems to be similar is 8.3 x 9.1 x 2.2 in (210 x 230 x 57 mm)
I am just speculating so take this as a grain of salt:
8.3 x 9.1 x 2.2 in (210 x 230 x 57 mm)
8.3 x 9.1 x 2.2 in (210 x 230 x 57 mm)
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- New User U on Jun 9, 2018
BEST ANSWER: Final dimensions are not complete, but it will be relatively compact.
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- New User U Staff on Dec 12, 2017
for example, the Massdrop x THX AAA™ 789 Linear Amplifierwhich seems to be similar is 8.3 x 9.1 x 2.2 in (210 x 230 x 57 mm)
I am just speculating so take this as a grain of salt:
8.3 x 9.1 x 2.2 in (210 x 230 x 57 mm)
8.3 x 9.1 x 2.2 in (210 x 230 x 57 mm)
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- New User U on Jun 9, 2018
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Does the volume knob control the analog outputs? ie. Can this function as a preamp for external speakers?
A shopper
on Nov 17, 2017
BEST ANSWER: Yes, the volume knob also controls the analog outputs.
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- New User U Staff on Jan 23, 2018
BEST ANSWER: Yes, the volume knob also controls the analog outputs.
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- New User U Staff on Jan 23, 2018
If you need balanced output, see above for information on a modification. Please note, this will void the warranty.
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- Andrew M on Sep 21, 2018
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Can we pass SACD DSD to this unit? I was under the impression that this can only be passed via HDMI.
Timothy H
on Nov 22, 2017
BEST ANSWER: Yes and no. You cannot hook up a SACD player to the unit since it does not have an HDMI input. However, anymore the DSD files, formerly only found on SACD's, are available as Hi-rez downloads from quite a few sites and some people have even gone to the considerable trouble of ripping their SACD's, so they have the files on a computer. Once you have the DSD files on a computer, you can play them on this unit via the USB type B input, assuming your player software supports the playing of DSD files (JRiver, for example). Also, if this unit supports DSD over DoP, you could probably use the coaxial digital input, but it is not stated if this unit allows that. This usually only works for 2.8 Mhz DSD files, not the 2X or 4X resolution files as coaxial doesn't have the bandwidth for that.
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- Don D on Jan 30, 2018
You can hook up any SACD player with analogue outputs to the amp and you will have DSD playback. However, this setup bypasses the DAC in the amp so the listener will be dependent upon the player’s DAC for SACD playback.
BEST ANSWER: Yes and no. You cannot hook up a SACD player to the unit since it does not have an HDMI input. However, anymore the DSD files, formerly only found on SACD's, are available as Hi-rez downloads from quite a few sites and some people have even gone to the considerable trouble of ripping their SACD's, so they have the files on a computer. Once you have the DSD files on a computer, you can play them on this unit via the USB type B input, assuming your player software supports the playing of DSD files (JRiver, for example). Also, if this unit supports DSD over DoP, you could probably use the coaxial digital input, but it is not stated if this unit allows that. This usually only works for 2.8 Mhz DSD files, not the 2X or 4X resolution files as coaxial doesn't have the bandwidth for that.
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- Don D on Jan 30, 2018
You can hook up any SACD player with analogue outputs to the amp and you will have DSD playback. However, this setup bypasses the DAC in the amp so the listener will be dependent upon the player’s DAC for SACD playback.
Excuse me. But if i use, for example, audirvana in my macbook (connected by usb to the monoprice), will it recognize the dac like native dsd capable? Or the dsd will be converted to pcm?
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- New User U on Mar 1, 2019
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The picture has the two balanced analog lines labeled as 'analog in', shouldn't that be analog out?
Justin B
on Dec 20, 2017
BEST ANSWER: The unit has balanced inputs, and unbalanced inputs and outputs. You can use the balanced headphone output on the front as a balanced output.
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- New User U Staff on Feb 13, 2018
BEST ANSWER: The unit has balanced inputs, and unbalanced inputs and outputs. You can use the balanced headphone output on the front as a balanced output.
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- New User U Staff on Feb 13, 2018
And with some warranty-voiding simple soldering, it should be pretty straightforward to modify the unit so the two XLR-3 "inputs" become balanced outputs wired internally to the XLR-4 headphone out and controlled by the volume dial. i.e. remove C67, C76, C79, C84 to disconnect XLR3's from the ADC. Then patch wire twisted pairs connecting the two XLR3's pins to XLR-4 pins as follows:
twisted pair 1
L+: XLR3 J2 pin 2 to XLR4 J10 pin 1
L-: XLR3 J2 pin 3 to XLR4 J10 pin 2
twisted pair 2
R+: XLR3 J4 pin 2 to XLR4 J10 pin 3
R-: XLR3 J4 pin 3 to XLR4 J10 pin 4
Each XLR-3 pin 1 is already tied to ground so you can leave that alone. This configuration is a bit better than using the XLR-4 balanced output since the cables will now have grounded shields, and the downstream device will now have shared ground with the 789 product.
twisted pair 1
L+: XLR3 J2 pin 2 to XLR4 J10 pin 1
L-: XLR3 J2 pin 3 to XLR4 J10 pin 2
twisted pair 2
R+: XLR3 J4 pin 2 to XLR4 J10 pin 3
R-: XLR3 J4 pin 3 to XLR4 J10 pin 4
Each XLR-3 pin 1 is already tied to ground so you can leave that alone. This configuration is a bit better than using the XLR-4 balanced output since the cables will now have grounded shields, and the downstream device will now have shared ground with the 789 product.
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- Andrew M on Sep 21, 2018
And the headphone outputs and RCA inputs/outputs will continue to work fine. You just lose balanced analog in capability.
If one were to do this mod, what would the volume and gain need to be set at to get standard line out voltages from the xlr connectors (2vrms, 4vrms, etc.) with minimal noise?
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- New User U on Nov 1, 2018
I'm not confident in my soldering skills to do this myself. Is this something I could take somewhere to have done for a fee? What kind of place would take on a job like this?
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What's the output impedance(not the advertised range of headphone impedance that the amp "supports") of the headphone amp ?
A shopper
on Jan 9, 2018
Monolith by Monoprice Desktop Balanced Headphone Amplifier and DAC with THX AAA Technology (Dual AKM 4493 DACs & Dual AAA-788 Modules)
Monoprice Desktop Headphone Amplifier
Monolith by Monoprice Tube Headphone Amplifier with ESS Sabre DAC
BEST ANSWER: Desktop HPA is 32Ω. Monolith tube HPA is selectable; 32Ω, 64Ω, 150Ω, 300Ω, & 600Ω
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- Dave L Staff on May 15, 2018
BEST ANSWER: Desktop HPA is 32Ω. Monolith tube HPA is selectable; 32Ω, 64Ω, 150Ω, 300Ω, & 600Ω
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- Dave L Staff on May 15, 2018
Output impedance of AAA-788 is very low! It's less than 0.05 Ohms at 1 kHz.
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- Andrew M on Sep 21, 2018
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You describe the DAC as capable of DSD 11.2MHz, but AMK lists the AK4493EQ as supporting DSD 22.4MHz. Is there a limitation in the way the design has been implemented?
A shopper
on Feb 13, 2018
BEST ANSWER: Specs listed are currently not final and will be updated.
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- New User U Staff on Feb 13, 2018
BEST ANSWER: Specs listed are currently not final and will be updated.
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- New User U Staff on Feb 13, 2018
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4.8 / 5.0
42 Reviews
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Rated 5 out of 5
Great Sound, Great Quality, Drivers may be faulty
The sound from the 24459 is nothing short of astounding. The typical description of audio equipment stands for this... that being "I have heard detail in my music I have never heard before."
A nice pair of headphones/earphones, great speakers... the 24459 will make them shine.
Stereo separation is amazing. Stereo imaging is amazing. Volume control is linear, clear, and smooth.
The volume control with the latest firmware doesn't seem to be as bad as what is seen in videos when it was first release, but it also isn't instantly responsive either. But it is good enough for me as I don't find I adjust the volume much. I have instead utilized JRiver Media Center using its internal volume. I setup 2 different "zones;" one for headphones the other for RCA output, then adjust the volume in JRMC to level it out between the two outputs. This isn't an option for everyone and is potentially an annoyance people may or may not want to have to deal with.
Where I feel that Monolith could improve is, dedicated buttons for changing the source from USB/Optical/etc and also a dedicated button to change output from headphones to line out.
I have read that one reason the buttons don't exist is because "most people don't use a device like this in that way." Well if that were true, why not offer a DAC/AMP with JUST RCA out and another DAC/AMP with JUST headphone output?
A nice pair of headphones/earphones, great speakers... the 24459 will make them shine.
Stereo separation is amazing. Stereo imaging is amazing. Volume control is linear, clear, and smooth.
The volume control with the latest firmware doesn't seem to be as bad as what is seen in videos when it was first release, but it also isn't instantly responsive either. But it is good enough for me as I don't find I adjust the volume much. I have instead utilized JRiver Media Center using its internal volume. I setup 2 different "zones;" one for headphones the other for RCA output, then adjust the volume in JRMC to level it out between the two outputs. This isn't an option for everyone and is potentially an annoyance people may or may not want to have to deal with.
Where I feel that Monolith could improve is, dedicated buttons for changing the source from USB/Optical/etc and also a dedicated button to change output from headphones to line out.
I have read that one reason the buttons don't exist is because "most people don't use a device like this in that way." Well if that were true, why not offer a DAC/AMP with JUST RCA out and another DAC/AMP with JUST headphone output?
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Rated 5 out of 5
I got this as an upgrade from my old Schiit stack. I enjoy this amp with both my Arya’s and HD 6XX’s. It sounds great and has a lot of features. One thing to me aware of is that the volume knob is digital, and not a pot. It doesn’t bother me too much, but it is something to be aware of.
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Rated 5 out of 5
fantastic
Great amp/dac combo.
enough for most setups with plenty of power to spare.
enough for most setups with plenty of power to spare.
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Rated 4 out of 5
A SOUND INVESTMENT!
Pure enjoyment is the term that comes to my mind! I purchased mine through Amazon simply because they offer five monthly payments of $100 each. The reason i only gave it five star's is because I'd like to see an HDMI inlet. Other than that (which isn't asking too much is it?). My system consists of a Denon AVR-X7200WA receiver, a Samsung computer , a Oppo BDP-103D, Klipsch KP-103-II speakers (the best part of my system), Sennheiser HD650 headphones, and last but not least the Monolith jeans headphone Amplifier and Dac. I admit the receiver need to at least only be used as a pre-amp for either a Monolith 5, or better yet a Mcintosh MC205, the Oppo's pretty good for a universal player, and i got a good deal on it. But it could even be traded up. Finances is what holds most of us back isn't it?
Anyway, i find myself listening to the headphones as much or now even more through the computer than the receiver and speakers. I wish the Oppo had balanced connections, then i could get the very cleanest experience my system has to offer through (through headphones). I mean the total harmonic distortion of the Monolith is pretty nil at .0005%, thats about as good as it can get. And my Sennheiser's are nothing to sneeze at. I'm sure their rating isn't quite as good as the Monolith though. I still need to dial in a few of adjustments like the Q, whatever that is. I need to chat with someone about that but the rest i have sounding pretty damn good. Real good actually! Even though I've only made the first monthly installment i can safely say I'd take the plunge again. And even though of course that this is only my first experience with headphone/dac's I'm satisfied i made a sound investment.
Anyway, i find myself listening to the headphones as much or now even more through the computer than the receiver and speakers. I wish the Oppo had balanced connections, then i could get the very cleanest experience my system has to offer through (through headphones). I mean the total harmonic distortion of the Monolith is pretty nil at .0005%, thats about as good as it can get. And my Sennheiser's are nothing to sneeze at. I'm sure their rating isn't quite as good as the Monolith though. I still need to dial in a few of adjustments like the Q, whatever that is. I need to chat with someone about that but the rest i have sounding pretty damn good. Real good actually! Even though I've only made the first monthly installment i can safely say I'd take the plunge again. And even though of course that this is only my first experience with headphone/dac's I'm satisfied i made a sound investment.
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January 11, 2021
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Rated 5 out of 5
Great value!
Great value. Certainly a BIG step up from my Schitt Modi/Magni DAC/Amp setup. Paired with my iPad Pro/Amazon Music running at 192kHz and Hifiman Aryas I’m in heaven.
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Rated 5 out of 5
Pleased and Impressed
So far, I have been very pleased with this amplifier. No issues, and the sound quality is excellent. I would recommend this amp.
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Rated 5 out of 5
Best Dac/Amp in this price range
I've finally found my end game Dac/Amp with the Monolith. This is no doubt the BEST Dac/Amp you can buy in this price range imo. I've tried a ton of Dac/Amps for music, gaming and movies/tv and the Monolith just does everything better. Plenty of inputs on the back like Optical which is what I use directly from the TV. A balanced input on the front for your more high end headphones... and an EQ built in to tweak a headphones sound signature! Monoprice covered all the bases on this one!!
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Rated 5 out of 5
Best sounding amp out there
Very clean and warm sound coming out of this amp. Worth every penny!!!
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Rated 5 out of 5
Quality amp/DAC/EQ for $500? This is a steal.
Exceeded all expectations. Having a quality amp/DAC/EQ in one unit at this price is fantastic. I like that it has both 1/4 inch and balanced 4-pin XLR headphone outputs, and that I don't have to be tied to a computer to do EQ in software. I wish the volume knob was faster, but that's just a nitpick. Overall, great sound and amazing bang-for-the-buck.
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Rated 5 out of 5
What a package!
Upgrading from Topping D30+ Schiit Magni 3 combo, I purchased this as a all-in-one solution for audio. And my-o-my! With the same old SHP9500, the listening experience transformed to a significant extent, in the better direction. Much more musical, detailed, and fun.
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