Thunderbolt / USB3 / AVB Ethernet Audio Interface with DSP and Mixing


The MOTU 624 is equipped with renowned ESS Sabre32™ DAC technology, and delivers the same exceptional analog audio quality as well as the proven, award-winning performance of the flagship 1248 audio interface (sold separately), providing you with what you need to convert your computer into a powerful 24-bit/192 kHz digital audio workstation (DAW).

It connects to any computer or iPad™ that's equipped with Thunderbolt™, super-speed USB 3.0, AVB Ethernet, or USB class-compliant firmware. It also includes optimized MOTU drivers that work with all your favorite audio apps, delivering industry-leading, ultra-low round-trip latency (RTL) performance – as low as 1.6 ms at 96 kHz over Thunderbolt with high-performance DAW hosts.

It comes housed in a rugged, compact enclosure that you can take anywhere, and provides 8 channels of pristine analog I/O, including 2 XLR mic inputs with individual preamps, plus 2 dedicated front-panel hi-Z guitar pickups, dedicated main outs, and a front-panel headphone jack, combined with 8 channels of ADAT optical digital I/O, for a total of 32 simultaneous audio channels.

You can connect all of your studio gear, including microphones, guitars, synths, keyboards, drum machines and effects processors to the 624. Record, monitor, route, and process all of these live inputs with no latency and no processor strain on your computer. It has extensive routing features that let you patch ins to outs, or split inputs to multiple destinations. Onboard powerful DSP delivers large console-style mixing with 48 channels, 12 stereo busses, and 32-bit floating point effects processing. Add Classic Reverb™ with lengths up to 60 seconds. Further sculpt your sound with 4-band parametric EQ carefully modeled after British analog console EQs. Choose between 2 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.

After recording and mixing in the studio, you can unplug it from the computer and take it onstage for use as a stand-alone mixer with effects. Control everything over Wi-Fi® from your favorite web browser running on your laptop, tablet, and smartphone.

Through AVB/TSN Ethernet, connect another MOTU AVB interface for more I/O — or connect to an expanded MOTU AVB network with multiple interfaces and computers.

From studio to stage, the 624 offers exceptional sound quality, state-of-the-art operation, plus rock-solid performance.

MOTU 624 Features:

  • Superb analog audio quality and high-end converters — Renowned ESS Sabre32™ DAC technology delivers 123 dB dynamic range and the same proven, award-winning audio quality as MOTU's flagship 1248.
  • Ultra-low latency and proven, high-performance MOTU drivers — Round-trip latency (RTL) performance as low as 1.6 ms at 96 kHz over Thunderbolt™ with high-performance DAW hosts.
  • Mobile operation and universal connectivity — Connects to your computer or iPad™ with Thunderbolt™, super-speed USB 3.0, or AVB Ethernet:

Thunderbolt Cable          USB3 cable          Ethernet Cable

Thunderbolt Logo                         USB 3 Logo                          AVB Logo

    • Thunderbolt: blazing speed with any Thunderbolt Host.
    • USB 3.0: also compatible with USB 2 and iOS.
    • AVB/TSN: Multi-channel audio over Ethernet – with support for up to 256 audio channels (128 in/128 out).
    • Class-compliant firmware and Industry standard drivers work with any audio apps.
  • (32) simultaneous audio channels — 2 mic inputs, 2 guitar inputs, 4 x 6 balanced analog with dedicated main outs, 8-channel ADAT optical and independent phone out for 16 inputs and 16 outputs.
  • DSP mixing and effects processing — Flexible 48-input digital mixer with 7 stereo aux busses, 3 groups, access to 32 network inputs, and DSP effects, including reverb, 4-band EQ, gate, and compression.
  • 32-bit floating point processing — The 624's mixing and effects DSP engine delivers virtually unlimited headroom and the utmost in sound quality.
  • Modeled vintage effects processing — Classic reverb. Compression modeled after the legendary LA-2A compressor. EQ modeled after British analog console EQs.
  • Flexible matrix routing and splitting — Send any input to any output, or multiple outputs. Includes routing to and from the computer, plus any devices on the AVB network.
  • Stand-alone operation with wireless control — Connect an Apple® Airport™ or other Wi-Fi router with a standard Ethernet cable for wireless control of device settings, powerful 48-channel mixing and DSP effects.
  • Web app control from any device — Control everything from your favorite web browser on a laptop, tablet, and smartphone connected to your local Wi-Fi network.
  • System expansion — Add a 2nd MOTU AVB-equipped interface with a simple CAT-5e ethernet cable. Connect up to five MOTU interfaces using a MOTU AVB Switch (sold separately).
  • AVB/TSN audio networking — Build a network with multiple computers and interfaces (computers and additional interfaces sold separately) using standard AVB/TSN switches and network cabling, with ultra-low network latency, even over long cable runs (100 meters point to point). Stream hundreds of audio channels among devices and computers on the network.

  • Optical I/O — Connect outboard digital processors, digital mixers or other gear. 8 channels of ADAT at  44.1/48 kHz, 4 channels of SMUX at 88.2/96 kHz or stereo TOS Link (optical S/PDIF) up to 96 kHz.
  • Comprehensive metering — The full-color LCD lets you view all signal activity at a glance with detailed metering for all analog and digital I/O. Access hardware settings from a simple and convenient menu.
  • AudioDesk — Includes AudioDesk work station software for Mac and Windows with 24-bit recording, sample-accurate editing, and 32-bit mixing and mastering.

MOTU 624 Specifications:

  • Computer Operating Systems:
    • For computer audio I/O: Mac OS X 10.8 or later; Windows 7 or later
    • For web app control: Mac, Windows, Linux, iOS, Android
  • Mac System Requirements:
    • 1 GHz Intel-based Mac or faster
    • 2 GB RAM; 4 GB or more recommended
    • Mac OS X version 10.8 or later
    • Available Thunderbolt, USB or AVB/TSN Ethernet port*
    • A large hard drive (at least 500 GB for recording)
      *NOTE: AVB/TSN Ethernet audio interface operation requires OS X 10.11 or later
  • Windows System Requirements
    • 1 GHz Pentium-based PC compatible or faster
    • 2 GB RAM; 4 GB or more recommended
    • Windows 7, 8, or 10
    • Available Thunderbolt or USB port
    • Available Ethernet port for firmware updates
    • A large hard drive (at least 500 GB for recording)
  • Sample rates: 44.1, 48, 88.2, 96, 176.4, 192 kHz
  • Mic inputs:
    • 2 x XLR mic inputs
    • Preamp gain: 0 to +63 dB (digitally controlled)
  • Analog inputs:
    • 2 x ¼" hi-Z guitar inputs (front panel)
    • 4 x ¼" TRS line inputs (balanced/unbalanced)
    • Max level: +24 dBu (range -96 to +22)
  • Analog outputs:
    • 6 x 1/4" TRS line out (balanced, DC coupled 5v)
    • Max level: +20 dBu (range -4 to +20)
    • 1 x ¼" 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 TOS Link (optical S/PDIF)
  • Total I/O:
    • 16 inputs / 16 outputs (32 total) at 1x sample rates
    • 12 inputs / 12 outputs (24 total) at 2x sample rates
    • 8 inputs / 8 outputs (16 total) at 4x sample rates
  • Computer I/O:
    • 1 x Thunderbolt 2 (Mac and Win)
      • Thunderbolt 1 & 3 compatible
    • 1 x USB 3.0 (Mac and Win)
      • USB 2.0 and iOS compatible (class compliant)
    • 1 x AVB/TSN Ethernet (Mac only)
      • Requires OS X 10.11 or later
    • Computer I/O channels:
      • Thunderbolt (44.1 to 96 kHz): 128 in/out
      • Thunderbolt (176.4 to 192 kHz): 64 in/out
      • USB 3.0 (44.1 to 96 kHz): 128 in/out
      • USB 3.0 (176.4 to 192 kHz): 64 in/out
      • AVB/TSN Ethernet: 16 to 128 in/out
        • depends on host computer speed
    • Headphone: 1 x ¼" TRS stereo phone (assignable)
    • Phantom power: 2 x individual +48V
    • Front panel:
      • 1 x ¼" TRS headphone output
      • 2 x TRS hi-Z guitar input
      • 1 x digital rotary encoder • main/phone volume
      • 2 x digital rotary encoders • guitar gain
      • 2 x digital rotary encoders • mic preamp gain
      • 4 x switches • (2) Pad and (2) 48V Phantom
      • 160 x 128 pixel RGB LCD for level meters / menu nav
      • Power switch
    • Power:
      • External 12-18V DC power supply
      • 1.0A max ; tip pos or neg
    • Dimensions (W x D x H, enclosure only): 8.6" x 7" x 1.75" (22 x 17.75 x 4.5cm)
    • Weight: 2.2 lbs. (1.0 kg)

WARNING: Cancer and Reproductive Harm -

Add to Cart

We're sorry, only of this item available

Call a Sales Pro at for more information

Serving Contractors, Dealers, and Installers Since 1977

Contact: 1-800-828-0509 / Hours: Mon - Fri 7:00AM - 7:00PM