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MOTU M64 Interface with 256 Simultaneous MADI I/O Channels

BH #MAM64 • MFR #9365
MOTU M64 Interface with 256 Simultaneous MADI I/O Channels
Key Features
  • High-Speed USB 2.0 Computer Interface
  • 192 I/O via MADI & AVB/TSN
  • Optical and Coaxial MADI Ports
  • 48-Channel Software Mixer with DSP
Primarily facilitating MADI connections, MOTU’S M64 is a digital-audio interface which allows you to route, split monitor, link, and apply effects with flexibility and easeThe device can also interface with AVB/TSN infrastructures, act as a standalone mixer, and accomplish further functions.
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MOTU M64 Overview

  • 1Description
  • 2256 Channels of MADI I/O
  • 3Flexible, Router, Converter and Splitter
  • 4Standalone Operation with Wireless Control
  • 5DSP Mixing and Effects Processing
  • 6Low-Latency MOTU drivers
  • 7Comprehensive Metering
  • 8Convenient Headphone Monitoring
  • 9Word Clock I/O
  • 1032-Bit Floating-Point Processing
  • 11Expandable
  • 12AVB-TSN Audio Networking
  • 13Audio Analysis Tools
  • 14AudioDesk Software
  • 15Compatibility with Mac and Windows Software

Primarily facilitating MADI connections, MOTU’S M64 is a digital-audio interface which allows you to route, split monitor, link, and apply effects with flexibility and easeThe device can also interface with AVB/TSN infrastructures, act as a standalone mixer, and accomplish further functions.

For connecting to your computer or host device, the M64 utilizes a USB 2.0 termination point—class compliant and compatible with both USB 3.0 connections and iOS. You can also use a CAT5e Ethernet connection with Mac computers, provided you’re running OS X 10.11 or later, and provided the computer in question has a thunderbolt port.

With this unit, MADI is the name the game, as the M64 sports two optical connections for 64 I/O MADI, as well as BNC connections facilitating 64 I/O channels of MADI. All standard formats and sample rates are supported, from 44.1 to 192 kHz, and a duplicate BNC output is provided for mirroring the coaxial bank to a secondary destination point, obviating the need for a separate splitter. This configuration, alongside the headphone output (which can be set to monitor any stereo source) gives you 256 inputs and 258 outputs in total.

In addition to its MADI capabilities, the M64 can distribute eight 8-channel banks of network-audio I/O, and thus, operate as part of a larger ecosystem of MOTU devices, all linking over an AVB-TSN and controllable wirelessly over Wi-Fi. For this express purpose, the MOTU Pro Audio Control web app has been created, working across platforms to provide seamless integration, manipulation, and coordination of digital audio. Any network you set up in such a fashion will function with ultra-low latency, even whilst handling hundreds of channels over long cable runs.

Also included with the M64 is a 32-bit, floating-point DSP engine. This engine provides a routing matrix with 48 channels and 12 stereo busses, as well as effects modelled on several prized pieces of hardware, audio analysis tools, and the AudioDesk DAW for Mac and Windows platforms.

256 Channels of MADI I/O

This unit provides 64 I/O of MADI via optical connections, as well as independent coaxial / BNC MADI, for another 64 channels in and out. Also included is an extra duplicate output in all standard formats and sample rates.

Flexible, Router, Converter and Splitter

You can send any input to any output, or split an input to multiple output channels, and convert formats to optical or coaxial MADI. This includes routing to and from your computer, as well as any devices on an AVB-TSN network.

Standalone Operation with Wireless Control

You can connect a standard Wi-Fi router with a standard Ethernet cable for wireless control of device settings, routing/splitting, 48-channel mixing and DSP effects. Indeed, you can control everything from your favorite web browser on a laptop, tablet, and smartphone, all while connected to your local Wi-Fi network.

DSP Mixing and Effects Processing

The flexible 48-input digital mixer provides seven stereo aux busses, three stereo groups, and access to 64 network inputs, as well as DSP effects, such as reverb, 4-band EQ, gate and compression. Some notable modules include emulations of the LA-2A, as well as a model of British analog-console EQ.

Low-Latency MOTU drivers

Universal connectivity over high-speed USB 2.0 (3.0 and iOS compatible), as well as AVB. These drivers deliver low-latency and solid performance.

Comprehensive Metering

The full-color, front-panel LCD lets you view all signal activity at a glance with detailed metering for all I/O. You can access hardware settings from an easy-to-read menu.

Convenient Headphone Monitoring

Assignable front-panel headphone output with volume control allows for monitoring of any stereo channel pair.

Word Clock I/O

Standard word-clock, BNC I/O for resolving to other digital audio gear, or house sync.

32-Bit Floating-Point Processing

The M64's mixing and effects DSP engine delivers high headroom.


Add a 2nd MOTU AVB-equipped interface by means of a CAT-5e Ethernet cable. You can connect up to five MOTU interfaces using a MOTU AVB Switch (available separately).

AVB-TSN Audio Networking

Build a network with multiple interfaces and computers using standard AVB-TSN switches and network cabling, with low network latency, even over long cable runs (100m point to point). Stream hundreds of audio channels among devices and computers on the network.

Audio Analysis Tools

Tools for audio analysis includes a full-screen real-time FFT display, spectrogram "waterfall" display, full-featured oscilloscope, X-Y plot, and phase analyzer.

AudioDesk Software

Included with the 8D is AudioDesk workstation software for Mac and Windows, which features 24-bit recording, sample-accurate editing and 32-bit mixing and mastering.

Compatibility with Mac and Windows Software

The M64 ships with Core Audio drivers for Mac OS X for compatibility with virtually all Core Audio-compatible apps. Also included are ASIO and Wave drivers for Windows 7, 8 and 10, ensuring compatibility with practically all ASIO- and Wave-compatible audio apps.
UPC: 839128006072

MOTU M64 Specs

Form FactorTabletop
Display1 x LCD
Channels of I/OMADI:
128 Input / 128 Output at 48 kHz
64 Input / 64 Output at 96 kHz
32 Input / 32 Output at 192 kHz
Max Sample Rate/Resolution192 kHz / 24-Bit
Number of Mic PreampsNone
Gain/Trim RangeHeadphone Outputs:
128 dB
Analog Audio I/O1 x 1/4" TRS Headphone Output
Digital Audio I/O1 x BNC Coaxial MADI Input
2 x BNC Coaxial MADI Output
1 x SC-Plug Optical MADI Input
1 x SC-Plug Optical MADI Output
Host Connection / USB1 x USB Type-B (USB 2.0)
Sync I/O1 x BNC Word Clock Input
1 x BNC Word Clock Output
Network I/O1 x RJ45 AVB
Frequency ResponseHeadphone Outputs:
22 Hz to 20 kHz +0/-0.15 dB
Headphone Output Power80 mW (Max)
Dynamic RangeOutputs:
108 dBA
THD+NHeadphone Outputs:
-100 dB
Digital Audio
Sample Rates44.1 / 48 / 88.2 / 96 / 176.4 / 192 kHz
OS CompatibilityWindows 7 or Later
macOS 10.8 or Later
Processor RequirementMac:
1 GHz Intel
1 GHz Intel Pentium
RAM Requirements2 GB, 4 GB Recommended
Storage Requirements500 GB
Required HardwareAvailable USB 3.0 / 3.1 Gen 1 Port
AC/DC Power Adapter12 to 18 VDC at 1.0 A (Included)
Dimensions8.7 x 7 x 1.8" / 22 x 17.8 x 4.5 cm
Weight2.0 lb / 0.9 kg
Packaging Info
Package Weight4.45 lb
Box Dimensions (LxWxH)15 x 11.4 x 5.5"

MOTU M64 Reviews

Buggy firmware / Browser control broken w/ 125% screen scale

By Philipp
Rated 1 out of 5
Date: 2021-11-05

1) Web control does not work on Chrome and Edge with Windows 10 if screen scaling is set in the Windows Display Settings to 125%. The Motu portal then states that the browser is outdated - even when using the latest Chrome and Edge browsers. One need to put system display setting to 100% for it to work (making the fonts too small on Ultra-Wide monitors), then suddenly the Motu Control panels work on Chrome/Edge. Took countless hours to debug this. Alternatively: on Firefox, the web controls work regardless of display scaling setting. 2) USB class compliant mode moves around the channels. 24 channels are available in class compliant mode. But E.g. USB output on channel 1 moves then to channel 9 and then suddenly to channel 17 and then back. When transitioning channels, it sounds metallic. Deal breaker. Motu firmware is in urgent need of an update. Hasn't been updated since November 6, 2018!!!

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