|Sample rates||44.1, 48, 88.2, 96, 176.4, 192 kHz|
24 channels (balanced/unbalanced)
3x DB-25 D-sub and 6x 12-pin Phoenix
Max level: +24 dBu (digitally adjustable -96 to +22)
|24Ao analog outputs||
24 channels (balanced, DC coupled)
3x DB-25 D-sub and 6x 12-pin Phoenix
Max level: +20 dBu (digitally adjustable -24 to 0 dB)
3 banks (24 ch) of ADAT optical at 1x sample rates
3 banks (12 ch) of SMUX optical at 2x sample rates
Stereo TOSLink (optical S/PDIF) on Bank A (optional)
24 analog + 48 digital (72 total) at 1x rates
24 analog + 24 digital (48 total) at 2x rates
24 analog + 0 digital (24 total) at 4x rates
1 x USB 2.0 audio class compliant
USB 3.0 and iOS compatible
1 x AVB Ethernet (requires OS X Yosemite)
|Computer I/O channels||
USB 2.0 (44.1 to 48 kHz): 64 in/out
USB 2.0 (88.2 to 96 kHz): 32 in/out
USB 2.0 (176.4 to 192 kHz): 24 in/out
AVB Ethernet: 16 to 128 in/out, depending on
host computer speed
|Sync I/O||1 x word clock in 1 x word clock out|
|Network I/O||1 x RJ45 AVB/TSN Ethernet (1 Gbps)|
(8 channels per stream)
4 in / 8 out @ 44.1 or 48 kHz
4 in / 8 out @ 88.2 or 96 kHz
2 in / 4 out @ 176.4 or 192 kHz
8 in / 4 out @ 44.1 or 48 kHz
8 in / 4 out @ 88.2 or 96 kHz
4 in / 2 out @ 176.4 or 192 kHz
5 x switches • menu navigation
324 x 24 pixel LCD for level meters / menu nav
1 x AC power switch
International 100-240V autoswitching supply
50-60 Hz • 0.5A max
(width x depth x height, enclosure only)
19 x 7 x 1.75 inches
48.3 x 17.75 x 4.5 cm
4.6 lbs / 2.08 kg (24ai)
4.4 lbs / 1.99 kg (24ao)
with rack brackets removed:
17.25 inches (43.8 cm) wide
4.5 lbs / 2.04 kg (24ai)
4.3 lbs / 1.95 kg (24ao)
(in 1 dB steps)
|24Ao analog output||DB-25 D-sub or 12-pin phoenix||123 dB||-110 dB||+20 dBu||24 dB (-24 to 0 dB)|
|24Ai analog input||DB-25 D-sub or 12-pin phoenix||110 dB||-102 dB||+24 dBu||118 dB (-96 to +22 dB)|
The 24Ai and 24Ao ship with standard Core Audio drivers for Mac OS X for compatibility with virtually all Core Audio-compatible apps, including:
The 24Ai and 24Ao ship with standard ASIO and Wave drivers for Windows 7*, 8 and 10 for compatibility with virtually all ASIO- and Wave-compatible audio apps, including:
Employs the same industry-recognized analog design as MOTU's groundbreaking 1248, 8M and 16A audio interfaces.
24 high-quality, balanced analog inputs (24Ai) or outputs (24Ao) on three banks of multi-channel connectors (D-sub and Phoenix), plus three banks of 8-channel ADAT optical for 24 analog channels and 48 digital channels.
Connects to a computer with standard AVB Ethernet or 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.
Flexible 48-input digital mixer modeled after large format mixing consoles, with 12 stereo busses and DSP effects, including reverb, 4-band EQ, gate, and compression.
DSP-driven mixing and effects engine delivers virtually unlimited headroom and the utmost in sound quality.
Classic reverb. Compression modeled after the legendary LA-2A compressor. EQ modeled after British analog console EQs.
Add a 2nd 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 a 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.
Send any input to any output, or multiple outputs. Includes 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 your favorite browser on a laptop, tablet or smart phone connected by wire or Wi-Fi to your local area network.
Connect an Apple Airport™ or other Wi-Fi router directly to the 24Ai or 24Ao with a standard Ethernet cable and control powerful mixing and DSP effects from your smart phone or tablet, without a computer. Great for live sound mixing.
Use the 24Ai or 24Ao as a 24-channel optical expander for other gear. 24 channels at 44.1/48 kHz or 12 channels at 88.2/96 kHz.
The large backlit 324 x 24 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.
Includes AudioDesk workstation software for Mac and Windows with 24-bit recording, sample-accurate editing and 32-bit mixing and mastering.
*After a ten-year run, Windows 7 has been officially end-of-lifed (EOL) by Microsoft as of January 4, 2020. Therefore, MOTU products no longer officially support Windows 7, although existing installed products (as of June 2020) should still continue to function as they have been under Windows 7. However, future updates, including drivers, may require Windows 8 or later.