Hybrid USB2/AVB audio interfaces with 48-channel digital mixers and AVB Ethernet networking capability

 

The 24Ai and 24Ao are hybrid USB2/AVB audio interfaces with 48-channel digital mixers and AVB Ethernet networking capability. They can operate as audio interfaces for a computer, as stand-alone digital mixers, as gateways to an expanded studio system, as components of an extended AVB audio network, or as capable hybrid devices performing all of these roles simultaneously. Together, they are designed to be a central component of a modern, high performance recording studio or live mixing platform. The following sections provide a brief overview of their main features and characteristics. State-of-the-art A/D and D/A conversion The analog section of each interface employs stateof-the-art 24-bit DACs or ADCs, which deliver analog recording and playback with remarkably high dynamic range at sample rates from 44.1 to 192 kHz. Complementary I/O configurations Each interface delivers an exceptional amount of analog and digital audio. In addition, the interfaces are designed to complement each other, and MOTU’s other AVB-equipped audio interfaces, to deliver a wide range of I/O options; you can mix and match several interfaces and operate them as a unified I/O and mixing system. The following sections provide a bird’s-eye glance of the I/O configurations offered by each interface in the MOTU AVB family. Each interface provides a variety of analog and digital interconnects, all active simultaneously, designed to provide everything you need for a wellequipped recording studio.

 

24Ai

72 simultaneous audio channels

Connection (Input x Output) 

Balanced analog in on 3x D-sub or 6x Phoenix

  • 24

ADAT optical digital (at 44.1 or 48 kHz)

  • 24 x 24

Total

  • 48 x 24

 

24Ao

72 simultaneous audio channels

Connection (Input xOutput)

Balanced analog out on 3x D-sub or 6x Phoenix

  • 24

ADAT optical digital (at 44.1 or 48 kHz)

  • 24 x 24

Total

  • 24 x 48

 

Network I/O

Each interface is also capable of handling additional 8-channel banks of network audio input and output for an additional 96 simultaneous audio channels.

 

 

MOTU 24AI | 24AO

$995.00Price
Choose Model

Technical Specifications

Sample rates 44.1, 48, 88.2, 96, 176.4, 192 kHz
24Ai analog
inputs
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)
Digital I/O 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)
Total I/O 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
Computer I/O 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)
AVB streams
(8 channels per stream)
24Ai 
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 
24Ao 
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
Front panel 5 x switches • menu navigation 
324 x 24 pixel LCD for level meters / menu nav 
1 x AC power switch
Power International 100-240V autoswitching supply 
50-60 Hz • 0.5A max
Dimensions
and weight
(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)

 

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 high-speed USB 2.0 or AVB Ethernet port*
  • A large hard drive (at least 500 GB for recording)
  • *AVB Ethernet audio interface operation requires OS X Yosemite

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 USB 2.0 or 3.0 port
  • Available Ethernet port for firmware updates
  • A large hard drive (at least 500 GB for recording)

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 Discovery App for Mac & PC (finds connected MOTU interfaces)
  • MOTU Discovery App for iOS (available from Apple App Store)
  • MOTU Pro Audio Control web app (served from the hardware itself)
  • MOTU Audio Tools (FFT, oscilloscope, X-Y plot, phase analyzer)
  • AudioDesk 4.0 for Mac & PC (separate download)

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

Contact

Muskego, WI 53150 

1-414-737-4900

masony@msn.com

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