M4 : Amazing!
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.

Technical Data
- Manufactured by MOTU
- Released in 2019
- Average price : $274
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