M4 Feature Highlights 4-in / 4-out USB audio interface with studio-quality sound Best-in-class audio quality driven by ESS Sabre32 Ultra™ DAC Technology Best-in-class speed (ultra-low latency) for host software processing Best-in-class metering for all inputs/outputs with a full-color LCD 2x mic/line/hi-Z guitar inputs on combo XLR/TRS Individual preamp gain and 48V phantom power for each input 2x balanced 1/4-inch line inputs Hardware (direct) monitoring for each input (mono or stereo for inputs 1-2, stereo for inputs 3-4) Monitor mix knob to balance live inputs and computer playback Measured -129 dB EIN on mic inputs 4x balanced, DC-coupled 1/4-inch TRS outputs Measured 120 dB dynamic range on the 1/4-inch balanced TRS outputs 4x RCA (unbalanced) analog out (mirrored) 1x headphone out (driven by ESS converters) with independent volume control MIDI in/out Support for 44.1 to 192 kHz sample rates USB audio class compliant for plug-and-play operation on Mac (no driver required) Windows driver with 2.5 ms Round Trip Latency (32 sample buffer at 96 kHz) Mac driver (optional, for 2.5 ms RTL@32/96 kHz and loopback feature) iOS compatible (USB audio class compliant) Driver loopback for capturing host output, live streaming and podcasting Bus powered USB-C (compatible with USB Type A) with power switch (USB cable included) Rugged metal construction Workstation software included (MOTU Performer Lite 10 and Ableton Live Lite 10) 100+ instruments (in Performer Lite) Over 6 GB of included free loops, samples and one-shots from industry leading libraries Kensington security slot Two-year warranty Technical Specifications Sample rates 44.1, 48, 88.2, 96, 176.4, 192 kHz Mic/line/guitar 2 x XLR/TRS "combo jack" mic/line/Hi-Z guitar inputs Independent preamp gain, 48V phantom power and monitor switch for each input Analog inputs 2 x 1/4" line in Analog outputs 4 x 1/4" TRS line out (balanced, DC coupled) 4 x RCA (unbalanced) analog out (mirrored) 1 x 1/4" TRS stereo headphone Computer I/O 1 x USB-C (compatible with USB Type A) 2.0 audio class compliant MIDI I/O 1 x MIDI IN 1 x MIDI OUT 16 MIDI channels to/from computer host Headphone 1 x 1/4" TRS stereo phone Phantom power 2 x individual +48V Front panel 1 x 1/4" TRS headphone output 2 x XLR/TRS combo inputs 1 x potentiometer • monitor vol 1 x potentiometer • phone vol 1 x potentiometer • input monitor mix 2 x potentiometer • mic/line/guitar input gain 5 x switches • (2) 48V, (2) MON and (1) 3-4 160 x 120 pixel full-colored LCD with input and output level meters Power Bus-powered through USB Dimensions and weight (width x depth x height, enclosure only) 8.25 x 4.25 x 1.75 inches 20.955 x 10.8 x 4.5 cm 1.55 lbs / 0.7 kg System Requirements Mac System Requirements Intel Core i3 Mac or faster (including Apple silicon Macs) 2 GB RAM; 4 GB or more recommended macOS version 10.11 or later (Optional driver requires 10.13 or later) Available USB port A large hard drive (at least 500 GB for recording) Windows System Requirements 1 GHz Pentium-based PC compatible or faster 2 GB RAM; 4 GB or more recommended Windows 10 or later (x64 only) Available USB port A large hard drive (at least 500 GB for recording) Class-Compliant Support USB audio class compliant for plug-and-play operation on Mac or iOS (no driver required) Included Software MOTU Performer Lite Ableton Live 10 Lite 6GB of loops and sounds from Big Fish Audio, LucidSamples, Loopmasters and MOTU Analog I/O Connector type Dynamic range (A-weighted) THD+N (unweighted) Max level Line Output 1/4" TRS, balanced, tip hot 120dB -110dB +16dBu Line Input 1/4" TRS, bal/unbal, tip hot 115dB -106dB +18dBu Mic input XLR, balanced, pin 2 hot 115dB -129dBu EIN +10dBu (at minimum gain) Phones 1/4", TRS stereo 115dB -110dB +12.5dBu
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