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18x22 USB audio interface with

DSP, mixing and effects

The latest in MOTU's award-winning UltraLite series, the UltraLite-mk4 is a USB audio interface with 40 simultaneous I/O channels (18 in, 22 out). It also delivers exceptional sound quality, new ultra-low latency drivers and expanded DSP for studio-grade mobile audio recording.
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UltraLite-mk4 Mouseover
Microphone

Superb audio quality

Analog outputs deliver 117dB dynamic range at sample rates up to 192 kHz. Renowned drivers deliver rock-solid performance and industry-leading low latency.

Ultra-low latency

New, optimized drivers for both Mac and PC deliver ultra-low latency performance. With a high-performance DAW such as Digital Performer, the UltraLite-mk4 delivers an astonishing round trip latency (RTL) of 1.83 ms (milliseconds) on OS X and 1.84 ms on Windows over USB (at 96 kHz with a 32-sample host buffer).
1.84 ms of latency
Compatability Icons USB Cable

USB 2 audio class compliant
USB 3 and iOS compatible

Built for studio and stage

Housed in a compact, aluminum-alloy
enclosure you can take anywhere, the
UltraLite-mk4 is equally well-suited
for studio and stage, with or without a
computer. As an interface or mixer, the
UltraLite-mk4 provides 18 ins and 22
outs, for a total of 40 simultaneous
I/O channels.
Stage
Studio
Live Gig

All the I/O you need

Connect all of your audio gear, including speakers, headphones, mics, guitars, synths, keyboards, drum machines, effects processors and even MIDI devices.
I/O Diagram

Large console-style mixing

Record, monitor, route and process all live inputs using the on-board 48-channel, console-style mixer, with no latency and no processor strain on your computer.
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Compressor and EQ

Modeled analog EQ

and compression

Further sculpt your sound with 4-band parametric EQ featuring filter types carefully modeled after British analog console EQs. Choose between two forms of compression: a conventional compressor and the Leveler™, an accurate model of the legendary LA-2A™ optical compressor that provides vintage, musical automatic gain control.

Advanced Extras

Analyze and scope your audio with advanced diagnostic tools, including a full-screen real-time FFT display, spectrogram "waterfall" display, full- featured oscilloscope, X-Y plot and phase analyzer.
FFT Display Spectrogram X-Y Plot

Mobile recording and mixing

After recording and mixing in the studio, take the UltraLite-mk4 on the road with your laptop for mobile recording and live mixing.
UltraLite-mk4

Web app control

The software that you use to control the UltraLite-mk4 doesn't reside on your hard drive. It's a web app served from the hardware itself. This means you can control the UltraLite-mk4's on-board DSP, mixing, and device settings from the web app software running in your favorite web browser on the computer, or even a tablet or smartphone on the same Wi-Fi network as your computer.
UltraLite-mk4 web app control

Solid Metal Chassis

The UltraLite-mk4 aluminum chassis is lightweight, yet incredibly sturdy and durable, and designed to withstand the rigors of the studio, stage, and tour bus. In a world awash with cheap plastic, the cool touch of the UltraLite-mk4's metal exterior in your hands is a reassuring reminder that you are holding quality engineering and construction built to last.
Metal Chassis

Rack mounting brackets

Use included brackets and hex bolts to mount the UltraLite-mk4 on rack rails, as shown here with a companion MOTU micro lite MIDI interface.
Hinges
Use the included jointer bracket to connect another MOTU half-rack interface (MIDI or audio). You can then mount them together in a standard 19-inch equipment rack.
Hinges Explained
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18x22 USB audio interface with DSP, mixing and effects

The latest in MOTU's award-winning UltraLite audio interface series, the UltraLite-mk4 delivers 18 inputs, 22 outputs, DSP mixing, FX processing and superb analog audio quality for studio-grade mobile audio recording.
UltraLite-mk4 Back and Front

Superb Audio Quality

Analog outputs deliver 117dB dynamic range at sample rates up to 192 kHz.

Ultra-low latency

New, optimized drivers for Mac and Windows deliver ultra-low latency performance, with roundtrip latency (RTL) of 1.8 ms (32-sample host buffer @ 96 kHz).
Latency Diagram

Built for studio and stage

Housed in a compact, rugged metal enclosure, the UltraLite-mk4 is equally well-suited for studio and stage. As an interface or mixer, the UltraLite-mk4 provides 18 ins and 22 outs, for a total of 40 simultaneous I/O channels.

All the I/O you need


FRONT

Guitar or Mic
Headphones

BACK

MIDI Controller
MIDI Modules
AUX Speakers
Main Speakers
Keyboards and Synths
Mac or PC
I/O Expansion
Home Theatre
Stage Monitors
Outboard Gear

Large console-style mixing

Record, monitor, route and process all live inputs using the on-board 48-channel console-style mixer, with no latency and no processor strain on your computer.

Modeled vintage effects processing

Classic reverb. Compression modeled after the legendary LA-2A leveling amplifier. EQ modeled after British analog console EQs.

Advanced Extras

Scope your audio with a full-screen real-time FFT display, spectrogram “waterfall” display, full-featured oscilloscope, X-Y plot and phase analyzer.

Mobile recording and mixing

After recording and mixing in the studio, take the UltraLite-mk4 on the road with your laptop for mobile recording and live mixing.

Web app control

Control everything from web app software running in your favorite web browser on the computer, or a tablet or smartphone on the same Wi-Fi network.

Solid Metal Chassis

The aluminum alloy chassis is lightweight, yet incredibly sturdy and durable, and designed to withstand the rigors of the studio, stage, and tour bus.

Rack mounting brackets

Use included brackets and hex bolts to mount the UltraLite-mk4 on rack rails, as shown here with a companion MOTU micro lite MIDI interface.
Use the included jointer bracket to connect another MOTU half-rack interface (MIDI or audio). You can then mount them together in a standard 19-inch equipment rack.