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18 In x 22 Out USB Audio Interface

  • MOTU UltraLite MK4 Front
  • MOTU UltraLite MK4 Back
£599.00 Inc VAT
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Quick Overview

MOTU UltraLite MK4 is a 18 In x 22 Out USB Audio Interface with
DSP, mixing and effects.

  • Description
  • Additional Information

MOTU UltraLite MK4 Product Description

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.

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).

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.

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.

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 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.

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

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.

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.


Technical Specifications


  • Sample rates 44.1, 48, 88.2, 96, 176.4, 192 kHz
  • Mic/guitar inputs 2 x combo XLR/TRS mic/guitar inputs
  • Preamp gain: 0 to +60 dB (digitally controlled)
  • Instrument gain: 0 to +30 dB (digitally controlled)
  • Analog inputs 6 x 1/4" TRS line inputs (balanced/unbalanced)
  • Max level: +24 dBu (digitally adjustable -96 to +22)
  • Analog outputs 10 x 1/4" TRS line out (balanced, DC coupled)
  • Max level: +20 dBu (digitally adjustable -4 to +20)
  • 1 x 1/4" TRS stereo headphone
  • Digital I/O 1 bank (8 ch) of ADAT optical at 1x sample rates
  • 1 bank (4 ch) of SMUX optical at 2x sample rates
  • Switchable to stereo TOSLink (optical S/PDIF)
  • Total I/O 18 in / 22 out (40 total) at 1x sample rates
  • 14 in / 18 out (32 total) at 2x sample rates
  • 8 in / 12 out (20 total) at 4x sample rates
  • Computer I/O 1 x USB 2.0 audio class compliant
  • USB 3.0 and iOS compatible
  • Computer I/O channels 64 in/out at 1x (44.1 to 48 kHz)
  • 32 in/out at 2x (88.2 to 96 kHz)
  • 24 in/out at 4x (176.4 to 192 kHz)
  • 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 (assignable)
  • Phantom power 2 x individual +48V
  • Front panel 1 x 1/4" TRS headphone output
  • 2 x XLR/TRS combo inputs
  • 1 x digital rotary encoders • main/phone vol/pwr
  • 2 x digital rotary encoders • mic/instr input gain
  • 4 x switches • (2) Pad and (2) 48V Phantom pwr
  • 128 x 48 pixel LCD for level meters / menu nav
  • Power External 12-18V DC power supply
  • 1.0A max • tip pos or neg

System Requirements


  • 1 GHz Pentium-based PC compatible or faster
  • 2 GB RAM; 4 GB or more recommended
  • Windows 7, 8 or 10
  • Available USB 2.0 or 3.0 port
  • A large hard drive (at least 500 GB for recording)


  • 1 GHz Intel-based Mac or faster
  • 2 GB RAM; 4 GB or more recommended
  • Mac OS X version 10.8 or later
  • Available USB 2.0 or 3.0 port
  • A large hard drive (at least 500 GB for recording)

MOTU UltraLite MK4 Additional Information

Brand MOTU
Condition New