MOTU M4 4x4 USB-C Audio Interface
MOTU M4 4x4 USB-C Audio Interface
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Sold: MOTU M4 4x4 USB-C audio interface in excellent condition. The M4 is a "best-in-class" audio interface, well known for its high quality converters and competitive price.
It's a great interface for anyone that wants 2 sets of monitors and 4 inputs. You can attach a mixer to expand inputs as needed (like a Behringer rack mount line mixer).
Sale includes the interface, a high-quality 7 ft USB-C cable (note, both ends are USB-C), and the original box/packing. Drivers can be downloaded from MOTU.com. This unit is bus powered (no need for an additional power supply).
This unit functions perfectly and is nice and clean. Display works perfectly.
There is a mark to the left of the headphone volume knob (see photo 4).
There are some other minor marks on the chassis from normal use. Please see photos. Priced accordingly.
The MOTU M4 is a 4-in / 4-out USB-C audio and MIDI interface designed for professional studio and streaming work. It features ESS Sabre32 Ultra converters for outstanding 120 dB dynamic range, ultra-clean mic preamps, and 24-bit / 192 kHz audio quality. The front panel includes two XLR-1/4 inch combo inputs with independent gain, phantom power, and hardware direct monitoring, plus two additional balanced line inputs on the rear. Four balanced DC-coupled outputs, mirrored RCA outs, and a dedicated headphone output provide flexible routing. Full-color LCD meters display all inputs and outputs in real time.
- Guaranteed as described or your money-back.
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All sales final except for damage or loss. International orders ship with rates calculated at checkout. A signature is required for delivery; if unsigned and returned, refunds incur a 15% restocking fee (excluding our initial shipping cost) or you pay to reship with insurance. Please keep packing materials for 15 days, or until any claims resolve. See our Refund Policy and Shipping Policy for full details.
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- Type: 4x4 USB-C audio interface with MIDI I/O
- Conversion Quality:
- 24-bit / 192 kHz recording and playback
- ESS Sabre32 Ultra converters
- 120 dB dynamic range on main outputs
- Ultra-low latency performance via USB-C
- Inputs:
- 2 x XLR-1/4 inch combo mic/line/hi-Z inputs (front panel)
- 2 x 1/4 inch balanced line inputs (rear panel)
- Mic preamps with individual gain control
- 48V phantom power (per input pair)
- Hardware direct monitoring options
- Outputs:
- 4 x 1/4 inch balanced DC-coupled outputs
- RCA stereo line outputs (mirrors main outs)
- 1 x 1/4 inch headphone output with independent volume
- MIDI: 1 x MIDI In, 1 x MIDI Out (5-pin DIN)
- Monitoring & Metering:
- Full-color LCD screen
- Real-time meters for all inputs and outputs
- Input monitor mix control
- Loopback: Built-in loopback channels for streaming, podcasting, tutorials, and sampling
- Connectivity:
- USB-C connection (USB class compliant)
- Works with macOS, Windows, and iOS
- Audio Performance:
- Mic Pre EIN: -129 dBu (ultra-low noise)
- Dynamic Range: 120 dB (A-weighted, line out)
- THD+N: 0.0005% (typical)
- Construction: Metal chassis with desktop form factor
- Power: USB-C bus powered (no external PSU needed)
- Dimensions: 7.5 x 4.4 x 1.8 inches (approx.)
- Weight: 0.8 kg / ~1.75 lbs (approx.)

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