MOTU 24Ao - USB/AVB 72 Channel Audio Interface
Product #21439 | SKU 9335
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MOTU 24Ao - USB/AVB 72 Channel Audio Interface

Product #21439 | SKU 9335
Availability on Request

Single rack space USB 2.0 interface
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Product Details
  • Product: #21439
  • SKU: 9335
Our Price $1,819.00 AUD
This product can't be purchased at this time, please contact us for more information.
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The 24Ao from MOTU is a single rack space USB 2.0 interface with industry-standard AVB networking for sub-millisecond network latency, and offers twenty-four channels of analog audio output combined with three banks of ADAT optical, for a total of seventy-two channels of I/O. The unit connects to a computer through USB 2.0, which provides more than enough bandwidth for the twenty-four analog channels, and when connected through AVB networking, supports hundreds of network channels.

All devices on an AVB network can stream audio to and from a computer, and everything can be controlled simultaneously from any computers, tablets, and smart phones connected to the network. The interface delivers excellent analog performance with digitally controlled analog trim on the analog inputs, and includes a forty-eight-channel software mixer modeled after large format mixing consoles, DSP effects with 32-bit floating point precision, flexible matrix-style routing and splitting, stand-alone operation, and Wi-Fi control.

Note! Windows support to be added later.

Key Features

  • Employs the same analog design as MOTU's 1248, 8M and 16A audio interfaces
  • Seventy-two simultaneous audio channels: Twenty-four balanced analog outputs on three banks of multichannel connectors (D-sub and Phoenix), plus three banks of eight-channel ADAT optical
  • Connects to a computer with audio class compliant high-speed USB 2.0 (compatible with USB 3.0 and iOS)
  • Discovery app and web app software works alongside any host audio software
  • On-board DSP with mixing and effects
  • Flexible forty-eight input digital mixer modeled after large format mixing consoles, with twelve stereo busses and DSP effects, including reverb, four-band EQ, gate and compression
  • DSP-driven mixing and effects engine delivers virtually unlimited headroom utilizing 32-bit floating point processing
  • Modeled vintage effects processing with compression modeled after the legendary LA-2A compressor and EQ modeled after British analog console EQs
  • Add a second MOTU AVB interface (24Ai, 24Ao, 1248, 8M or 16A) with a simple Cat-5e Ethernet cable
  • Connect up to five MOTU interfaces using a MOTU AVB Switch ( sold separately)
  • Build an AVB network with multiple interfaces and computers using standard AVB 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
  • Matrix routing and splitting allows for sending any input to any output, or multiple outputs, including routing to and from the computer, plus any devices on the AVB network
  • Control on-board DSP, mixing, device settings and network audio routing from web app software running in a preferred browser on a laptop, tablet or smart phone connected by wire or Wi-Fi to a local area network
  • Standalone mixing with wireless control - connect an Apple Airport or other Wi-Fi router directly to the 24Ao with a standard Ethernet cable and control mixing and DSP effects from a smart phone or tablet, without a computer, great for live sound mixing
  • Use the 24Ao as a twenty-four channel optical expander for other gear (24 channels at 44.1/48 kHz or 12 channels at 88.2/96 kHz)
  • Large backlit 324 x 24 LCD allow for viewing 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
  • Includes AudioDesk workstation software with 24-bit recording, sample-accurate editing and 32-bit mixing and mastering


USB 2.0 audio class compliant
Bit Depth
Sample Rate
44.1, 48, 88.2, 96, 176.4 and 192 kHz
Analog Outputs
24-channels, balanced, DC coupled
3 x DB-25 D-Sub
6 x 12-pin Phoenix
Electrical Characteristics
Maximum Input Level: 20 dBu (digitally adjustable -96 to +22)
Trim Range: 24 dB (-24 to 0 dB) in 1 dB steps
Dynamic Range: 123 dB, A-weighted
THD+N: -110 dB, unweighted
Digital I/O
24-channels @ 1x SR, 12-channels SMUX @ 2x SR
3 x TOSLink ADAT optical input
3 x TOSLink ADAT optical output
2 x BNC I/O
Front Panel
5 x Switches for menu navigation
324 x 24 pixel LCD for level meters/menu navigation
1 x AC power switch
Power Requirements
100~240 VAC auto-switching supply, 50/60 Hz, 0.5 A maximum
System Requirements
1 GHz Intel-based Mac or faster
OS X 10.8 or later
2 GB RAM (4 GB or more recommended)
Available USB 2.0 port
Large capacity hard drive for recording (at least 500 GB)
1 GHz Pentium-based PC compatible or faster
Windows 8 or later*
2 GB RAM (4 GB or more recommended)
Available USB 2.0 port
Large capacity hard drive for recording (at least 500 GB)
* Windows support coming soon
Compatible Software
Compatible Mac Software
Unit ships with standard Core Audio drivers for Mac OS X for compatibility with virtually all Core Audio-compatible apps, including:
MOTU Digital Performer
Avid Pro Tools (version 9 or later)
Apple Logic Pro
Apple Logic Express
Apple Garage Band
Apple SoundTrack Pro
Ableton Live
Propellerhead Record and Reason
Steinberg Cubase
Cockos Reaper
Native Instruments Kontakt
Waves stand-alone apps (and plug-ins, via compatible host)
Compatible Windows Software
Unit ships with standard Wave and ASIO drivers for Windows 8 for compatibility with virtually all WAV-compatible audio apps, including:
MOTU Digital Performer
Avid Pro Tools (version 9 or later)
Ableton Live
Cakewalk Sonar
Steinberg Cubase
Propellerhead Record and Reason
Image Line FL Studio
Sony Vegas Pro
Sony Sound Forge
Sony Acid
Cockos Reaper
Native Instruments Kontakt
Waves stand-alone apps (and plug-ins, via compatible host)
Web App Support
Any web client platform: Mac, Windows, Linux, iOS, Android
Any web browser: Safari, Firefox, Chrome, Opera, Explorer, etc.
Web client must be connected to the same network as the MOTU AVB interface by wire or Wi-Fi
Included Software
MOTU AVB Discovery App for iOS (available from Apple App Store)
MOTU AVB Control web app (served from the hardware itself)
AudioDesk 4.0 (available as a separate download)
Dimensions (WxDxH)
432 x 178 x 51 mm (17 x 7 x 2") without included rackears
3.2 kg (7 lb)

Australian Shipping Via DHL
DHL offers a great express shipping service to Australia from New Zealand. We are proud to be able to offer express shipping to main cities on the east coast of Australia, within the same timeframe ( If not quicker ) than local Australian courier companies. Prior to the Covid-19 outbreak, service standards for these main centers was overnight. However these services have been impacted greatly, and as such the overnight service has been suspended. Overnight shipping will likely resume once things have returned to normal.

Qualifying main centers include:

  • Brisbane
  • Sydney
  • Adelaide

Whilst this service is extremely efficient and will likely be delivered within 1-2 days 99.9% of the time, it cannot be guaranteed. In the case where something were to go wrong with your delivery and it doesn’t arrive within the specified time frame, in most cases it will be delivered by the next day.

While not all major cities are eligible for overnight delivery, they still benefit from this great service. Other centers throughout Australia will have a typical delivery ETA of 2-4 days. (Excluding rural delivery address where this ETA can be extended to an additional three or more days).

If you require urgent shipping and you don’t reside in one of the cities stated above, please contact us and we can find a solution that works best for you.

Please Note: Shipping via DHL is not available to PO boxes and/ or parcel boxes etc.


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  • Product: MOTU 24Ao - USB/AVB 72 Channel Audio Interface
  • Manufacturer: Motu
  • Model: 24Ao
  • SKU: 9335
  • RM Product #: 21439

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