4-Channel USB C Audio Interface

  • 24-Bit/192 kHz AD/DA converter
  • 2 Microphone preamps with individually switchable +48 V phantom power on each
  • 2 Line inputs: 6.3 mm XLR/Jack combo (switchable to Hi-Z instrument input)
  • 2 Balanced line inputs: 6.3 mm Jack
  • 4 Balanced line outputs: 6.3 mm Jack
  • 4 Unbalanced outputs: RCA
  • Stereo headphone output: 6.3 mm Jack
  • MIDI input/output
  • Loopback feature
  • LCD level meter
  • Includes MOTU Performer Lite, Ableton Live Lite, and 6 GB of loops and samples
available since November 2019
Item number 478036
sales unit 1 piece(s)
Recording / Playback Channels 4x4
Number of Mic Inputs 2
Number of Line Inputs 4
Number of Instrument Inputs 2
Number of Line Outs 4
Headphone Outs 1
Phantom power Yes
Number of S/PDIF Connectors 0
Number of ADAT Connectors 0
Numer of AES/EBU Connectors 0
Number of MADI Connectors 0
Ethernet 0
Other Connectors No
MIDI interface Yes
Word Clock No
Max. sample rate (kHz) 192 kHz
Max. resolution in bit 24 bit
USB Bus-Powered Yes
Incl. power supply No
USB Version 2.0
Width in mm 210 mm
Depth in mm 108 mm
Height in mm 45 mm
Included in delivery USB cable
Zero latency monitoring 1
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Excellent sound

MOTU is known for its high-quality interfaces and converters in the mid-to-high price range. With its M series, however, the US manufacturer is venturing into the competitive interface price range of around 200 euros. The MOTU M4 is the four-channel variant of the M series USB interface and is designed to be extremely handy and light. The high-resolution display, which shows the input and output levels in detail, immediately catches the eye. Even so, the main focus of the MOTU M4 is not on fancy features or complex software, but solely on delivering excellent sound at an affordable price.

No frills - no fuss

On the front, the MOTU M4 is equipped with two microphone inputs, which are designed as XLR/jack combo sockets so that both line-level and instrument signals can also be processed. The preamps deliver a maximum gain of up to 60 dB. Of course, both channels can supply a microphone with 48 V phantom power and the channels can be individually switched to direct monitoring. Four dual outputs are provided on the back, so that each channel has a TRS line out and an RCA. Finally, there is also a MIDI interface - the MOTU M4 does not require any frills at all.

Lightning fast

The heart of the MOTU M4 are its ESS Sabre32 Ultra converters, the same ones found in much more expensive interfaces such as the Apogee Symphony. They offer a dynamic range and an extremely low level background of noise that has never before been available in this price range. And last but not least, MOTU has outdone itself with the USB driver: The driver enables a round trip latency of less than 2 ms, which is incredible for a USB interface. You almost don't have to resort to direct monitoring anymore. The MOTU M4 is primarily aimed at musicians and producers who want an uncompromising sound without having to shell out a fortune.

About MOTU

The US manufacturer of digital audio hardware from Cambridge, Massachusetts, was founded in 1981 and since then has continued to generate attention for its sophisticated and innovative concepts. The company’s range includes USB, Thunderbolt, and network audio interfaces, MIDI interfaces, video hardware, and the popular MOTU Digital Performer DAW software. MOTU also developed “Mouse Stampede”, one of the first arcade games for the Apple Macintosh, in 1984. In short, MOTU represents good-quality, reliable products with a great deal of creativity and wit, which usually come at a very fair price.

Everything you need

The MOTU M4 is a truly versatile interface. Due to its low latency and excellent sound, it is extremely well-suited for vocal recordings at home or on the go. But the M4 is also a reliable partner in live situations, for playing backing tracks and software instruments, or looping an instrument live through a DAW. In addition, it is a real eye-catcher with its large, bright display - a solid, fast interface with everything you need. There is not much more to say, except that the performance is extremely good and the price is fair.

Great clarity and sound for this price
Svarog 27.05.2020
I'm using this in my home studio setup, connecting two pairs of monitors, headphones and some mics and guitar.
The build quality is great, metal chasis and pots, beautiful LCD display with meters, and rubber bottom pads so it doesn't slip around.

The headphone amp drives my 250 ohm DT990 without a problem. I keep it at about 60-65% while mixing and at about 50% for mastered material and it is loud enough for me, with a lot more gain if you need it.
Sound is crystal clear, which is expected as it has professional converters.
The only thing that bugs me is that there is no volume control for output 3/4, at least no practical and fast way to do it. So switching to my secondary monitors to check the sound is a bit of a hassle.

Sturdy build, clean converters, great LCD, two pairs of outputs, good headphone amp.

No volume control for output 3/4


Audio issues, not sure if faulty or not?
Anonymous 27.12.2021
Run this with a brand new MacBook Pro. immediately had audio issues. updated drivers, installed all relevant software, reset firmware on the unit. Tried everything I could find online, still won't work. Found similar posts online saying there are bugs, a big shame as other reviews for this are gleaming but seems there are bugs and reliability issues..


Unbelievable Value
neuroaktivo 10.11.2021
Great sound, great headphone preamp, great metering, great construction, theres not a thing to complain. Watch Julian Krause's youtube review to get all the info.

I would pay a bit more for adat in/out, but the value as it is right now is OVER 9000.



Orim 01.07.2020
This little black box has it all:
- amazing sound
- very “quiet” almost no noise microphone preamplifiers
- incredibly natural sounding preamps for instruments (all kind of guitars)
- very clever combination of inputs and outputs
- phantom power individually switchable for each channel
- great sturdy build (I dropped it just when unpacking, was moment of terror, but the interface works perfectly) :)
- unbelievable short latency time

I bought it for my home studio to replace constantly problematic Focusrite Scarlett 4i4 3gen (which replaced TC Impact Twin).
Using and abusing it for 3 weeks now, and it just works. Works perfectly well with:
- Windows 10
- MacOS
- iPadOS

I am using it with USB-C cable, but this device works without problems connected to USB-A port (USB 3 and USB2) - tested on my laptops.

If you’re looking for quality interface for your home studio, this one is wort to try.
I am very happy. In the last two years I changed/checked dozens of USB audio interfaces. Always was some problems - either noisy preamplifiers, or non-working drivers, or devices not working after OS update.
This MOTU M4 seems to “just work” :-) I am happy.


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