8-Channel Audio Mixer with USB
    Product # 615808
    8-Channel Audio Mixer with USB
    Product # 615808
    In Stock This item should ship tomorrow (4/27/2017) if ordered within 19 hours 27 minutes

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    8-Channel Audio Mixer with USB

    Whether it is for a recording or a performance, a good mixer should be a part of every musician's toolbox. However, mixers can be expensive, but that was before Monoprice got into the Pro Audio business!

    This 8-channel mixer features a full suite of input options, including four balanced XLR microphone inputs, four unbalanced mono 1/4" TS line inputs, two pairs of unbalanced mono 1/4" TS inputs ganged together for stereo control, a single USB 2.0 input/output for connection to a computer, a 3.5mm stereo TRS input, and a pair of RCA inputs. The mixer can provide +48V Phantom Power to all four XLR mic inputs.

    In addition to the USB 2.0 input/output, this mixer has five additional outputs. The Phones output is an unbalanced stereo 1/4" TRS connection, while the Aux Send and the R and L outputs are all unbalanced mono 1/4" TS connections. Additionally, there is a pair of RCA outputs. The R and L outputs are ganged together for stereo control on the mixer.


    • Four microphone/line inputs
    • +48V phantom power for condensor microphones
    • Accepts 2-channel stereo input
    • 3.5mm stereo TRS jack for input from CD or mp3 players
    • 2-band equalizer with +/- 15dB adjustment at 80Hz and 12KHz
    • RCA jacks for stereo input/output
    • Separate headphone output control
    • Main L/R stereo output control
    • 2-channel, 4-LED level display
    • Supports USB audio input and output
    • Includes AC adapter for use anywhere in the world (100-265V, 50/60Hz)
    • Includes stand-mount adapter

    USB cable not included.

    Model 615808
    Channels 8
    Inputs 4x XLR / 1/4" TS mic/line level
    4x 1/4" TS line level
    1x stereo RCA line level
    1x 3.5mm TRS line level
    2x USB 1.1
    Outputs 2x 1/4" TS line level
    1x 1/4" TS AUX send
    1x 1/4" TRS headphone level
    1x stereo RCA line level
    Phantom Power +48V on all mic inputs
    Equalizer 2-band ±15dB EQ at 80Hz and 12kHz
    Variable Gain Mic: -20dB ~ +45dB
    Line: -20dB ~ +25dB
    Frequency Response 20 Hz ~ 20 kHz ±1dB
    THD+N (0dBu) < 0.008%
    Signal-to-Noice Ratio Main Outputs: -103dB
    USB, RCA, and Phones Outputs: -90dB
    Aux Send -85dB
    Input Impedance Mic: 2.3 kΩ
    Line: 20 kΩ
    CD/RCA: 24 kΩ
    Input Power 12 VDC
    Maximum Power Consumption 11 watts
    Dimensions 8.7" x 8.3" x 2.7" (220 x 210 x 68 mm)
    Weight 2.2 lbs (0.98kg)

    Support Files:

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    Browse 1 question Browse 1 question and 2 answers
    Can this mixer power my blue yeti USB mic from input usb on mixer?
    A shopper on Apr 9, 2017
    BEST ANSWER: As far as I know this mixer uses professional audio cables. I ended buying XLR Male to XLR Female 16AWG Cable. And a Large Diaphragm Condenser Microphone. All I bought from monoprice. If you wanted to use a USB microphone you might have to get a USB to XLR connector.
    3.7 / 5.0
    33 Reviews
    5 Stars
    4 Stars
    3 Stars
    2 Stars
    1 Stars
    As with a previous reviewer, I received a noticeable hum on the USB input device, but was able to correct it. By changing the sampling rate on the input to the highest setting, the hum went away completely.

    PROS: Works as expected - both OSX and Win7 detected the input and output devices.

    CONS: N/A
    June 3, 2013
    A Bit Frustrated, However Great Product
    Here's the thing: I'm not rating a 10 because it's not a perfect interface and I didn't rate 9 because I'm unsure if the con I'm experiencing is due to the product itself or not. I got my laptop today (final piece of home-recording studio) and I was a little disappointed at the results of my recording. I was super hyped to be able to finally record music with crystal-clear audio (as evident by plugging in my headphones directly to the mixer and hearing immediate reception of my voice through the mics). However, after testing the audio in recording to my laptop, I discovered that A) it did not record the two microphones in separate audio tracks and B) the recorded audio did not sound nearly as clear as it did through the headphones. I know that this machine must be capable of producing the clarity I'm hearing the my headphones because it is all working through the machine, but I am frustrated as to why the recorded result is on par as if I had recorded with my phone. I am also frustrated with the fact that the audio tracks aren't separated, but to a much lesser extent (I could record music happy with this still in effect). Now I am not sure if this lack of good quality is due to the program, the product, or something else, but as I could not find any solution as the what the issue is at all, I can only assume it has something to do with the machine because it's absolutely not a professional product, however it has potential to do its job well. If I figure out this issue (I'm hoping maybe a Monoprice rep could help me figure it out because I can't find squat anywhere else on the Internet) then this product would make my year and gladly recommend it. Until then, a little frustrated and yearning to record music of a high audio quality. After all, the purpose of me spending a total of $200 of audio equipment at Monoprice was for me to be able to record much higher audio quality. Please help!

    PROS: -Supposed "buzzing" by other reviewers is not present (Maybe was fixed finally?)

    -Allows for a plethora of different options of audio input finding the levels and sound you want

    -Very dynamic piece of hardware

    CONS: -Recorded audio quality sounds much lower when played back from laptop in contrast to how it sounds when headphones plugged directly into device (?)

    -Doesn't record in separate audio tracks in Audacity Audio Program
    August 13, 2015
    1khz Hum FIX!
    Ah the Hum, everyone is bitching about the Hum! Monoprice is right, it records JUST FINE over USB. What you (like me) have been trying to do is push audio back out at the same time you record. This causes a nice 1khz hum.


    I have been able to resolve the issue and tested. I thought it was just the mac, but other USB devices seemed to work fine. It seemed to work fine on my desktop, but I don't think I've actually been pushing audio back out at the same time (monitoring the audio over USB) on my linux box.

    I use renoise on the mac and when I turn on the audio out to be the USB, instant hum... I plugged the headphones into the mac directly, and stopped monitoring the audio through the mixer and, amazing NO HUM.

    Monoprice responses are stupid, Its not the power, or anything like that. I've even tested with an independent 12v battery supply, hum is still there. It's only the fact that I was monitoring the audio over usb, while recording.

    Get yourself a virtual loopback cable software and monitor through the mac's audio out.

    PROS: Great interface for a simple setup

    CONS: USB hum at 1khz (and resonance), only on my mac! But I have a solution.
    October 12, 2014
    Very functional, but mediocre quality
    For the price, this mixer is adequate. I was, however, hoping for more out of it.

    From a hardware perspective, the mixer is very light and very compact. The knobs do not all rotate consistently some are more free than others. I'm not a fan of the layout of the board, especially with regards to the bezel running across the top that splits the EQ controls, but it's clear that these choices were made due to space constraints. The mixer does come with a bracket for mounting to a stand It is surprisingly useful when on the road, and I am a huge fan of it. Overall, I do not believe this mixer would stand up to heavy abuse, but its portability makes it easy to take on the road.

    I had three use cases for this device: using it when out gigging, using it when jamming with friends at home, and using it as an audio interface for single track recording. For gigging and jamming, I have no issues with this device as far as sound quality goes. However, the USB I/O is disappointing. When using it with a Linux workstation using the JACK connnection kit, there is a pronounced hum. When using it with the pulseaudio server, the hum is not present. I am unable to isolate settings to resolve this issue. This means that to record with this mixer, I must use a different sound interface. While talking to monoprice support, I learned that it is not recommended to use the USB interface for recording, which begs the question of why it was included in the first place.

    For single-track recording, it turns out that neither this mixer, nor any of the 8-track mixers out on the market would suffice while using their USB or 2TK I/O. This and other comparable devices mix the external audio with the instrument input and then send that mix out. This is the opposite of what you need for single-track recording you want the instrument sent out before being mixed so that your new track is isolated. It is not possible to alter this behavior. My workaround is to record the instrument using the AUX bus and monitor the entire mix using the 2TK-IN. This has the disadvantage of not using the USB interface (which is unusuable due to the hum in any case).

    All in all I give this device an 8 out of 10. I reduced the score due to the build quality with regards to the layout and feel of the knobs, and due to the issues with the USB audio. Had I known about these quirks ahead of time, I would still choose to purchase this device.

    PROS: Fantastic price point
    Adequate sound quality
    Very portable (the stand mount is surprisingly helpful!)

    CONS: Mediocre build quality
    Hum with USB I/O
    June 21, 2013
    Decent Unit - No great for USB Recording multiple tracks
    I am a electronics guy/computer guy/guitarist who likes to record multi-track recordings at home for personal use. Before buying this unit, I have used multiple other USB audio input devices and bought this because I wanted an adjustable clean USB recording input and the ability to add in all my inputs via a single control unit (and the phantom power for my mics kicks butt).

    USB HUM:
    First let me say that every one of the devices I've used for recording hum when connected to my desktop. However, using my Macbook Pro all my other recording devices get zero hum from power interference, except for this mixer, it still gives me the hum.

    With all my other USB audio input devices (Line 6 HD500, POD X3 Live, POD Studio UX2 and Digitech RP-350) I can record one track and listen to it while I add any additional tracks without issue. With this mixer, in order to hear my first track while recording the next track, it plays back the existing track on top of the new track into the new track. Basically re-recording the previous tracks in the background of the new track. This makes it impossible for recording as it muddies up the recording. This looks to be because you have to press the 2TK to MAIN buttons to hear the input and output at the same time, but it doesn't understand that you don't want to re-record what the USB is playing back.

    Beyond that it's really nice to have my drum machine, MICs, and amplifies all connected and mixable with this board, but I am unable to usefully record with it.

    Cool mixer, not really great for recording. Probably would NOT replace with the same unit if this one dies.

    PROS: - Affordable mixer
    - Phantom power
    - Easy USB recording
    - Stand Mountable

    CONS: - USB Hum (even using separated power and laptop)
    - Pretty useless for recording multiple separate tracks (see review)
    September 25, 2013
    Great little mixer, Poor implementation of USB IO.
    When I pulled this mixer out of the box, I was impressed with it's size and the complement of IO available. I planned to use it to bring in the audio from my rack of studio gear and a few computers and route them to some monitors. In this case, the mixer would have been perfect. However, my other use was for Voice Chat, IE Skype and other voip services.
    Unfortunately, the USB IO on this mixer automatically routes it's output to the main mix, as well as routing itself back in as an input source. This has been discussed by other reviewers.
    Unfortunately, just monitoring from another audio source, which was suggested by another reviewer isn't a good enough solution and defeats the purpose of purchasing a mixer that is designed to consolidate audio sources into 1 convenient board for ease of control.
    So, with some regret, I had to generate an RMA and return it.
    If all you want to do is combine audio sources for live or recording purposes, this mixer would do the trick. It's compact, built well, and has everything you need.
    However, if you really need to take advantage of simultaneous Bi-directional USB IO, this mixer does not properly implement this feature without generating a feedback loop. I urge the powers that be to consider revving this model to include a switch that would prevent the output of the USB signal to be sent back through the mixer as an input source, while still allowing it to be monitored through headphones or main outs.

    PROS: Compact, light, well built, A great little mixer for basic audio tasks.

    CONS: No way to take full advantage of simultaneous bi-directional USB IO without feedback loop.
    February 29, 2016
    USB Hum makes this unusable
    Was hoping to use the mixer via USB, connected to a Mac, but because of the high-pitched hum, I cannot use it. I've had this longer than a year, so it's unlikely I can return or exchange itand it seems that everyone has the same problem, so I'm not sure what exchanging would accomplish. But as it is, I'm an unhappy customer with this device.

    PROS: Works great as a simple mixer using XLR cables.

    CONS: After a long time not trying it, finally tried using USB connection. High-pitched hum makes this impossible to use, and basically worthless when connected via USB.
    July 30, 2014
    Worth Every Penny
    I think this board is outstanding for the price. I use it with my DJ setup and it works flawlessly. Very clean signal, high quality parts, and everything you need. I would have loved to see an effect or two for the vocals, but hey, for this price I'm just getting greedy. I don't use the USB, so I can't comment on that. I plug in my laptop, and run it from the board to my amp. Exceptionally simple set up, and it works flawlessly. Three thumbs up!

    PROS: Excellent options for the money

    4 mic inputs

    Multiple inputs for any device

    separate gains for all mics

    CONS: none based on what I need it for
    February 27, 2015
    USB Hum - Article Provided
    I am very interested in this mixer but concerned about the comments. I found this link online which may indicate a problem that's not unique to this mixer.


    Can anyone who has this mixer work through this article and post their findings?
    September 4, 2013
    Great mixer, bad wall wart!
    I like everything Monoprice, so when seeing this mixer on sale for around $68 I just had to have it. The mixer itself is wonderful and has everything I need for video recording and capturing audio from interviews and stereo performances.

    However, the power supply is the downfall for this product. It could be just my unit, but the wall wart actually "screams". Very high pitch audible screech is generated. Did not check to see if RF interference is generated, simply could not stand the sound. Fortunately, I have about a half dozen power supplies with the same rating, so just swapped the screamer out.

    I probably should have dropped the rating by a couple more points, but I must admit I am a Monoprice fanboy, so I forgive them for the very first item that wasn't perfect. And no I will not be returning the mixer because of the power supply.

    Just be aware that your power supply may have the same problem.

    PROS: Compact
    cable connections angle toward back
    easy setup and controls

    CONS: power supply (wall wart) screams
    July 28, 2013

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