UPC/EAN #839128005907     MPN #9300    


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The 1248 is the flagship interface for a new line of high-performance audio interfaces that combines superb audio quality and state-of-the-art features.

The 1248 Thunderbolt audio interface provides industry-leading dynamic range and large console style mixing. With 66 channels of audio I/O (32 ins and 34 outs), the 1248 also supports USB 2.0 audio class compliant connectivity that is USB 3.0 compatible. Powerful DSP delivers large console style mixing with 48 channels, 12 stereo busses, and 32-bit floating point effects processing, including modeled analog EQ, vintage compression and classic reverb. The unit's extensive routing grid patches ins to outs, or splits inputs to multiple destinations. Use the 1248 as a stand-alone mixer and control everything from the 1248's innovative web app running on your iPad™, iPhone™, tablet, smart phone, and laptop. Connect a second MOTU AVB interface (1248, 8M or 16A) with a simple Ethernet cable. Add more I/O with the MOTU AVB Switch (sold separately). Build an AVB audio network with multiple switches and sub-millisecond latency, even over long cable runs. Stream hundreds of channels among devices and computers on the network. From initial tracking to final mastering, the 1248 delivers superb sound quality, state-of-the-art operation, and reliable performance.
  • Superb audio quality - For example, the balanced TRS analog outputs produce 123 dB dynamic range and -110 dB THD+N (0.0003%) at -1 dBFS, Unweighted, 1 kHz.
  • 66 simultaneous audio channels - 4 mic inputs, 2 guitar inputs, 8 x 12 balanced analog with dedicated main and monitor outs, 2 x 8-channel ADAT optical, RCA S/PDIF (with SRC), and two independent phone outs for 32 inputs and 34 outputs.
  • Universal connectivity - Connects to your computer with Thunderbolt or high-speed USB 2.0 (compatible with USB 3.0). Class-compliant firmware and Industry standard drivers work with any audio software.
  • On-board DSP with mixing and effects - 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.
  • 32-bit floating point processing - The 1248's mixing and effects DSP engine delivers virtually unlimited headroom and the utmost in sound quality.
  • Modeled vintage effects processing - Classic reverb. Compression modeled after the legendary LA-2A compressor. EQ modeled after British analog console EQs.
  • System expansion and audio networking - Add a 2nd MOTU AVB interface (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 (hundreds of meters). Stream hundreds of audio channels among devices and computers on the network.
  • Matrix routing and splitting - Flexible, matrix-style audio routing and splitting for any analog or digital input, computer channel or network stream to any other output, computer, or network device. Split any single input to unlimited multiple output destinations.
  • 256 channels of network audio I/O for your host computer - Record and monitor up to 128 networked audio channels in and out, simultaneously, through the Thunderbolt connection to a host computer.
  • Web app control - 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.
  • Stand-alone mixing with wireless control - Connect an Apple Airport™ or other Wi-Fi router directly to the 1248 with a standard Ethernet cable and control the 1248's powerful mixing and DSP effects from your smart phone or tablet, without a computer. Great for live sound mixing.
  • ADAT digital I/O - Connect outboard digital processors, digital mixers or other gear. 16 channels at 44.1/48 kHz or 8 channels at 88.2/96 kHz.
  • Comprehensive metering - 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.
  • AudioDesk - Includes AudioDesk workstation software with 24-bit recording, sample-accurate editing and 32-bit mixing and mastering.
  • Sample rates :
    44.1, 48, 88.2, 96, 176.4, 192 kHz

    Mic inputs :
    4 x XLR mic inputs

    Preamp gain :
    0 to +63 dB (digitally controlled)

    Analog inputs :
    2 x 1/4" hi-Z guitar inputs (front panel)
    8 x 1/4" TRS line inputs (balanced/unbalanced)
    Max level: +24 dBu (digitally adjustable +2 to +24)

    Analog Outputs:
    12 x 1/4" TRS line out (balanced, DC coupled)
    Max level: +20 dBu (digitally adjustable -4 to +20)
    2 x 1/4" TRS stereo headphone

    Digital I/O :
    2 banks (16 ch) of ADAT optical at 1x sample rates
    1 bank (8 ch) of SMUX optical at 2x sample rates
    Stereo RCA S/PDIF up to 96 kHz (with SRC on input)
    Stereo TOSLink (optical S/PDIF) on Bank A (optional)

    Total I/O :
    32 inputs and 34 outputs (66 total) at 1x sample rates
    24 inputs and 26 outputs (50 total) at 2x sample rates
    14 inputs and 16 outputs (30 total) at 4x sample rates

    Computer I/O :
    1 x Thunderbolt (compatible with 1 and 2)
    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 :
    Thunderbolt (44.1 to 96 kHz): 128 in/out
    Thunderbolt (176.4 to 192 kHz): 64 in/out
    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

    Headphone :
    2 x 1/4" TRS stereo phone (assignable)

    Phantom power :
    4 x individual +48V

    Front panel :
    2 x 1/4" TRS headphone output
    2 x TRS hi-Z guitar input
    2 x digital rotary encoders for main/monitor volume
    2 x digital rotary encoders for phone volume
    2 x digital rotary encoders for guitar input gain
    4 x digital rotary encoders for mic preamp gain
    8 x switches for (4) Pad and (4) 48V Phantom switch
    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
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