Monolith by Monoprice M2100X 2x90 Watts Per Channel Stereo Home Theater Power Amplifier with RCA & XLR Inputs
Product # 43863
UPC # 889028182611
$299.99
$399.99
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Browse 41 questions
Browse 41 questions
and 52 answers
Where are the back panel photos?
A shopper
on May 14, 2024
BEST ANSWER: Hi, below the main picture, you'll see small ones and a right arrow. You can press the right arrow until you see the picture of the rear panel. Thank you.
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- Jhomar R Staff on May 14, 2024
BEST ANSWER: Hi, below the main picture, you'll see small ones and a right arrow. You can press the right arrow until you see the picture of the rear panel. Thank you.
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- Jhomar R Staff on May 14, 2024
Hi, on the monoprice site, there are little pictures below main picture you can enlarge. Use the right arrow and select the sixth picture. It will provide backside photo.
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- Brian K on May 14, 2024
- Purchased on Feb 12, 2024
its same as all there other brands 2 balanced 2 rca a plug 2 areas speaker wires go
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- Justin on May 15, 2024
- Purchased on Dec 15, 2023
hit arrows left or right on pictres below/slides shows back panel
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- Justin on May 15, 2024
- Purchased on Dec 15, 2023
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In addition to my (Answered) question about the XLR inputs, I got an answer saying it's for convenience, I Think this is besides the point of my question. I asked what is the point of having XLR Unbalanced inputs in terms of the Balanced or Unbalanced ability / spec, many other known Amplifiers with XLR inputs are 'BALANCED' for a reason, to have a BALANCED connection and use XLR not just for convenience but to get the signal in Balanced 'form' --- Please elaborate why you chose to use an Unbalanced XLR connection on these lesser / more budget amplifiers, and not Balanced(I think a lot of these buyers of these new amps think they're getting balanced inputs)..?
K G
on Aug 27, 2023
Monolith by Monoprice M2100X 2x90 Watts Per Channel Stereo Home Theater Power Amplifier with RCA & XLR Inputs
Monolith by Monoprice M5100X 5x90 Watts Per Channel Multi-Channel Home Theater Power Amplifier with RCA & XLR Inputs
Monolith by Monoprice M3100X 3x90 Watts Per Channel Multi-Channel Home Theater Power Amplifier with RCA & XLR Inputs
BEST ANSWER: Convenience. Many amps are out there with XLR inputs that are not balanced inputs. Why would you expect balanced inputs on these "lesser / more budget amplifiers"?
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- Inaccurate
- New User U Staff on Aug 28, 2023
So the XLR is convenience of having an XLR connection without Balanced ability, I understand. - if you check the 'why I Bought this item' section, some are mistaken thinking it's a Balanced connection because it's XLR. This isn't my mistake I read the page / info about unbalanced XLR. I guess it is a mistake to think if an AMP has RCA + XLR, to think XLR is automatically going to be Balanced. why not just have RCA then I'd say. Thanks for responding.
No need to be snarky - especially when you are the seller. Bush league answer, imho. Not necessary.
BEST ANSWER: Convenience. Many amps are out there with XLR inputs that are not balanced inputs. Why would you expect balanced inputs on these "lesser / more budget amplifiers"?
- Reply(2)
- Inaccurate
- New User U Staff on Aug 28, 2023
So the XLR is convenience of having an XLR connection without Balanced ability, I understand. - if you check the 'why I Bought this item' section, some are mistaken thinking it's a Balanced connection because it's XLR. This isn't my mistake I read the page / info about unbalanced XLR. I guess it is a mistake to think if an AMP has RCA + XLR, to think XLR is automatically going to be Balanced. why not just have RCA then I'd say. Thanks for responding.
No need to be snarky - especially when you are the seller. Bush league answer, imho. Not necessary.
This is a strange feature and could be deceiving to the novice user. If you plug a balanced male XLR plug into this female XLR jack on the amplifier, it will certainly pass the signal, but there will be a 6 dB loss. The loss is because only half of the balanced signal is used. The other half goes to ground. I think the description should be modified so as to give a full explanation of what's going on. As I said, this is not how an XLR input is usually wired -- convenance or not.
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- Stephen D on Mar 15, 2024
You're asking non-product developers product development questions. Know your audience buddy...
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- New User U on Aug 31, 2023
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Does this have a metal faceplate?
A shopper
on Jan 29, 2024
BEST ANSWER: yes like a brushed aluminum
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- Justin on Jan 30, 2024
- Purchased on Dec 15, 2023
BEST ANSWER: yes like a brushed aluminum
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- Justin on Jan 30, 2024
- Purchased on Dec 15, 2023
The faceplate is the same material as the rest of the housing.
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- M3incorp on Jan 29, 2024
- Purchased on Jan 15, 2024
yes it does ..its very well made ..
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- bill b on Jan 30, 2024
- Purchased on Jan 17, 2024
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The power on indicator light is shown in red, as well as a violet or blue color. Can you explain the difference?
A shopper
on Jun 3, 2024
BEST ANSWER: Hi, the power indicator goes red when on standby mode and goes blue when its on. Thank you.
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- Jhomar R Staff on Jun 5, 2024
BEST ANSWER: Hi, the power indicator goes red when on standby mode and goes blue when its on. Thank you.
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- Jhomar R Staff on Jun 5, 2024
When the amplifier is in standby the indicator is red, when the system turned on the indicator glows blue.
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- Paul D on Jun 4, 2024
- Purchased on Feb 24, 2024
Light is red on standby mode, blue when turned on.
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- Amer H on Jun 3, 2024
- Purchased on Mar 23, 2024
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why call it a Multi Channel when it is only a dual or Stereo Unit?
A shopper
on Nov 25, 2023
Well, according to Meriam-Webster and other English language dictionaries....multi means more than one...multi doesn't indicate how many more than one, just more than one....so Monoprice is correct by saying this is a multi channel unit. Probably for marketing and branding they chose mutli- instead of stereo or dual.
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- S E on Nov 25, 2023
- Purchased on Sep 30, 2023
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Does it come with a remote?
A shopper
on Dec 29, 2023
BEST ANSWER: No. It only power your speakers.
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- New User U on Dec 29, 2023
- Purchased on Dec 15, 2023
BEST ANSWER: No. It only power your speakers.
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- New User U on Dec 29, 2023
- Purchased on Dec 15, 2023
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Can this amp be paired with the Yamaha RX-V870 AVR that is presently driving my Focal Theva's No.3?
Yamaha rated @ 80w x 3 - 25w x 2
Yamaha rated @ 80w x 3 - 25w x 2
A shopper
on Aug 16, 2024
BEST ANSWER: Monoprice Power Amp requires a pre-amp signal. It appears from my research that your Yamaha has a Pre-Out and a Line-Out. I am assuming you have a subwoofer using your Yamaha Pre-out. Therefore, without a pre-out available due to using a subwoofer, this power amp will not work for you. However, if you are not using the Yamaha pre-outs, then you have a signal pathway to the Monolith Power Amp. Your next problem is your Focal speakers are not bi-wireable. If they were bi-wireable, I would use the Monolith Power Amp to drive the lower frequencies. The Power Amp has some serious juice for the bass section.
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- Brian K on Aug 17, 2024
- Purchased on Feb 12, 2024
BEST ANSWER: Monoprice Power Amp requires a pre-amp signal. It appears from my research that your Yamaha has a Pre-Out and a Line-Out. I am assuming you have a subwoofer using your Yamaha Pre-out. Therefore, without a pre-out available due to using a subwoofer, this power amp will not work for you. However, if you are not using the Yamaha pre-outs, then you have a signal pathway to the Monolith Power Amp. Your next problem is your Focal speakers are not bi-wireable. If they were bi-wireable, I would use the Monolith Power Amp to drive the lower frequencies. The Power Amp has some serious juice for the bass section.
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- Brian K on Aug 17, 2024
- Purchased on Feb 12, 2024
i have mine driving 2 bowers shelf speakers like 140 watts so should be ok
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- Justin on Aug 17, 2024
- Purchased on Dec 15, 2023
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Would this be able to drive 4 JBL Studio Speakers which are 6 OHM?
Stephen M
on Aug 17, 2024
BEST ANSWER: It's a 2 channel amplifier. It cannot drive 4 speakers. You would need to purchase the 5ch amplifier for that.
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- New User U Staff on Aug 19, 2024
BEST ANSWER: It's a 2 channel amplifier. It cannot drive 4 speakers. You would need to purchase the 5ch amplifier for that.
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- New User U Staff on Aug 19, 2024
Yes, the specs show "Safe with all types of loads. Rated for 4 to 16 ohms" . Also shows 90 watts for 8 ohms, and 135 watts for 4 ohms - I suspect those 6 ohm JBLs will get a little more output than its stated 90 watts.
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- Paul D on Aug 19, 2024
- Purchased on Feb 24, 2024
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Does it sense input signal to turn on / off?
A shopper
on Oct 2, 2024
BEST ANSWER: Hi, you can use the trigger port for this feature. This brings an amplifier out of standby mode when music starts playing, reducing the time it takes for the amplifier to become active and start outputting audio to your speakers.
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- Jhomar R Staff on Oct 4, 2024
BEST ANSWER: Hi, you can use the trigger port for this feature. This brings an amplifier out of standby mode when music starts playing, reducing the time it takes for the amplifier to become active and start outputting audio to your speakers.
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- Jhomar R Staff on Oct 4, 2024
i love this amp..but no..it does not have this feature
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- bill b on Oct 2, 2024
- Purchased on Jan 17, 2024
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How many watts RMS?
A shopper
on Aug 3, 2023
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What is the point of an XLR
input if it isn't balanced?
input if it isn't balanced?
A shopper
on Aug 8, 2023
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Is this amp capable of 2 ohm loads?
A shopper
on Oct 11, 2023
BEST ANSWER: No, only down to 4 ohms. I have a Parasound 275v2 two channel amp that will run at 2 ohms, but the amp can get hot.
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- David h on Oct 13, 2023
- Purchased on Aug 11, 2023
BEST ANSWER: No, only down to 4 ohms. I have a Parasound 275v2 two channel amp that will run at 2 ohms, but the amp can get hot.
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- David h on Oct 13, 2023
- Purchased on Aug 11, 2023
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Are the weights and dimensions shown in Full Specs for the shipping container, or the actual amp?
A shopper
on Nov 17, 2023
BEST ANSWER: Thank you for your inquiry. The weight listed on the full specs tab is the weight of the actual amplifier. The weight of the unit including the shipping box is 30.8 pounds.
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- Jake S Staff on Dec 1, 2023
BEST ANSWER: Thank you for your inquiry. The weight listed on the full specs tab is the weight of the actual amplifier. The weight of the unit including the shipping box is 30.8 pounds.
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- Jake S Staff on Dec 1, 2023
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Can this amplifier be driven in mono to drive one speaker and if so, what are the power ratings if one were to get two for a stereo system?
A shopper
on Dec 11, 2023
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what are the actual dimensions of the amp -- not the box?
A shopper
on Dec 19, 2023
BEST ANSWER: Thank you for your inquiry. The actual dimension should be 21.5" x 19.5" x 9.0" (545mm x 490mm x 230mm)
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- Jake S Staff on Dec 19, 2023
BEST ANSWER: Thank you for your inquiry. The actual dimension should be 21.5" x 19.5" x 9.0" (545mm x 490mm x 230mm)
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- Jake S Staff on Dec 19, 2023
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Is the XLR pass-through stereo? I'd like to create a 2.1 setup without a receiver or a pre/pro by connecting this subwoofer's XLR input to my LG CX 77 television's 3.5mm headphone output via an XLR-to-TRS cable into TRS-to-3.5mm adapter, then connect this subwoofer's XLR output to an M2100X to power a pair of THX-465T speakers. (I can upgrade that system later by adding a pre/pro, more amps, and more speakers.) Would this work?
A shopper
on May 13, 2024
Monolith by Monoprice M2100X 2x90 Watts Per Channel Stereo Home Theater Power Amplifier with RCA & XLR Inputs
Monoprice 6ft Premier Series XLR Male to 1/4in TRS Male Cable, 16AWG (Gold Plated)
Monoprice 3.5mm TRS Stereo Plug to 1/4in (6.35mm) TRS Stereo Jack Adapter, Gold Plated
Monolith by Monoprice THX-465T THX Certified Ultra Dolby Atmos Enabled Tower Speaker (Each)
Monolith by Monoprice M-15 V2 15in THX Certified Ultra 1000-Watt Powered Subwoofer
BEST ANSWER: No that doesnt work. The XLR only daisy chains the LFE from one sub to another.
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- New User U Staff on May 13, 2024
BEST ANSWER: No that doesnt work. The XLR only daisy chains the LFE from one sub to another.
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- New User U Staff on May 13, 2024
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what are the exact dimensions of just the Monolith by Monoprice M2100X 2x90 Watts Per Channel Stereo Home Theater Power Amplifier with RCA & XLR Inputs? the Full Specs page shows 17" x 15.5" x 5.9" but someone commented different dimensions. I need to know the exact dimensions of just the amp to ensure it will fit in my audio cabinet
A shopper
on Jul 22, 2024
BEST ANSWER: Hi, the actual dimensions of the product is 17" x 15.5" x 5.9" (431mm x 393mm x 150mm). Thank you
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- Jhomar R Staff on Jul 23, 2024
BEST ANSWER: Hi, the actual dimensions of the product is 17" x 15.5" x 5.9" (431mm x 393mm x 150mm). Thank you
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- Jhomar R Staff on Jul 23, 2024
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I have 4 speakers, how do I hook them up?
A shopper
on Aug 26, 2024
BEST ANSWER: You cant hook up 4 speakers to a 2ch amplifier.
- Reply
- Inaccurate
- New User U Staff on Aug 27, 2024
BEST ANSWER: You cant hook up 4 speakers to a 2ch amplifier.
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- New User U Staff on Aug 27, 2024
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Does the amp automatically go into a standby mode if no audio signal is detected or do you have to press the front button each time?
A shopper
on Nov 27, 2023
Would it work in the EU - 220V?
MOMCHIL Z
on Dec 7, 2023
Does this amp have the ability to auto-on and auto-off via the input source?
A shopper
on Dec 30, 2023
Can this amp be rack mounted?
Lance K
on Feb 13, 2024
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Love this Amp!! I am using it to power my surround speakers in a 7.2 setup. The sound is loud and clean. It definitely made my surround speakers come to life.
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Killer Amp!
This 2x90 is driving a pair of 901's pretty well. The sound is amazing and plenty loud. Bose in 9.2 is pure heaven and a 3x90 is coming soon. Killer amp!
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Rated 5 out of 5
Much needed upgrade to using an AVR for 2.1 stereo sound!
I came from the world of audiophile headphones so I already have a Gustard R26 DAC and a Feliks Euphoria Evo headphone amp/speaker pre-amp. To power my new Elac Uni-Fi UB52 speakers I knew my old Yamaha RX-V373 AV receiver that I had sitting around wasn't going to bring out the best in them, so the search for a compatible power amp was on. After looking at different amps in the $300-800 price range I settled on the wallet friendly M2100X and I am very impressed with the value these bring to my stereo configuration. The Elac speakers really shine now. Highly recommend this power amp.
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March 16, 2024
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Rated 5 out of 5
Pleasantly surprised, and at a terrific price!
Over the last couple years I've been auditioning integrated amps to see whose sound profile I prefer. Most recently I had a Marantz but for a while I was running a Denon. I've always preferred a more neutral sound, and while these two were good, they still weren't what I was looking for. A few weeks ago I came across a Parasound preamp at the Goodwill for $25 and decided to see how separates stacked up to what I had tried. Not wanting to break the bank I opted for the M2100X since I still wanted quality sound and it got good reviews while still being affordable, especially compared to similar products. While it won't likely impress listeners who are used to amps costing multiple thousands of dollars, I was very pleasantly surprised by the sound stage, clarity, and impact this amp provides. Way better than any integrated amp I've ever heard. Perhaps someday I'll end up with a ridiculously expensive amp but until then, I'll be perfectly happy with my Monolith.
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Rated 5 out of 5
Excellent Budget Amplifier
This amplifier packs a true 90 watts per channel. I use it for my rear surrounds and performs amazing.. It is much bigger than what you might think from the pictures. I also think the size is listed wrong in the dimensions part of the online site.
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Rated 5 out of 5
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Connected to a Yamaha avr to power two Klipsch RP-280F. I am afraid of turning up the dial it sounds so loud. No distortion at high volumes. This has allowed my avr to give more clarity to my center channel and surrounds.
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