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HomepageRecording HardwareUSB › MOTU 24Ai

Two new audio interfaces with 24 analog channels in one rack space, superb audio quality, AVB audio networking, and large console style mixing with 48 channels and 12 stereo busses

The 24Ai 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 input 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.
  • 24 Balanced Analog Inputs
  • 48 Channels ADAT I/O
  • Wordclock I/O
  • Onboard DSP
  • Digital Mixer with Effects
  • Expansive Matrix Routing
  • USB 2.0 and AVB Compliant
  • Standalone Mixing with Wireless Control
  • Up to 24-bit/192 kHz Resolution
  • Includes AudioDesk DAW Software
  • 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

    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

  • 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)
  • Reviews
    Price *
    Free shipping in Canada. Conditions
    Additional information
    For more information about the 24Ai, please visit the website of MOTU
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