Checked September 2026

MOTU
MOTU M4 review
Audio interfaces
A 4-in, 4-out USB-C interface with ESS Sabre32 DAC and a color LCD meter. Best for producers needing extra line inputs and outputs. Price not published on the developer's site.

Key features
- 2 combo mic/line/Hi-Z inputs plus 2 line inputs
- 4 balanced TRS outputs
- 120 dB output dynamic range
- 2.5 ms round-trip latency at 96 kHz
- Loopback channels
- MIDI in/out
Pros
- Four outputs
- Strong measured specs
- Metal construction
Cons
- Only two mic preamps
MOTU M4 alternatives
A 1-in, 2-out bus-powered USB interface with a Vintage Mic Preamp mode.
VST3not supportedAUnot supportedAAXnot supportedCLAPnot supportedWINsupportedMACsupportedLNXnot supported+ iOSA 2-in, 2-out bus-powered USB interface with two Vintage Mic Preamp inputs.
VST3not supportedAUnot supportedAAXnot supportedCLAPnot supportedWINsupportedMACsupportedLNXnot supported+ iOSA 1-in, 2-out USB interface with Vintage Mic Preamp mode and a 76 Compressor.
VST3not supportedAUnot supportedAAXnot supportedCLAPnot supportedWINsupportedMACsupportedLNXnot supported+ iOS
Sources: www.motu.com