MOTU 24Ao USB2 2.0, AVB Ethernet Audio Interface with 24-Channel Analog Output and DSP

OUR PART #: 24AO MFR #: 9335

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The MOTU 24Ao audio interface offers 24 analog channels in one rack space, superb audio quality... ...Read more

MOTU 24Ao USB2 2.0, AVB Ethernet Audio Interface With 24-Channel Analog Output And DSP Image 1
MOTU 24Ao USB2 2.0, AVB Ethernet Audio Interface With 24-Channel Analog Output And DSP Image 2
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MOTU 24Ao USB2 2.0, AVB Ethernet Audio Interface With 24-Channel Analog Output And DSP
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Product Overview

The MOTU 24Ao audio interface offers 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 24Ao is part of MOTU's high-end audio interface lineup alongside the 1248, 8M, 16A and 24Ao. You can mix and match their complimentary I/O configurations and unify operation with their shared AVB audio networking platform.

The 24Ao offers twenty-four balanced analog outputs in a single rack space plus three 8-channel ADAT optical banks, for a total of 72 channels (24 analog plus 48 optical). Use the 24Ao to add analog I/O to your computer, or as a flexible optical expander and mixer... or both!

All analog I/O is supplied on multi-channel DB-25 D-sub connectors and Phoenix connectors for convenient flexible wiring in to sutdio and industrial installations alike. If you need individual quarter-inch connectors, check out the 16A interface from MOTU.

The 24Ao employs the same industry-recognized analog deswign as MOTU's groundbreaking 1248, 8M and 16A audio interfaces. The 24Ao features a dynamic range of 123 dB and a THD+N of -110 dB on each of its line inputs.

Every digital audio workflow has some latency; the only question is how much? In the case of the 24Ao the answer is not much at all. In the 24Ao, latency is measured in a handful of samples from the time an audio signal first goes digital to its arrival somewhere else (to an output, the mixer, or the computer). By keeping latency this low in the hardware, the 24Ao helps minimize latency introduced by your host software.

  • 24 Ao Analog Output at 48 khz Samples
    • 24 Ao D/A: 6
    • FPGA In: 4
    • FPGA Out: 4
    • DSP In/Out: 6
    • Total: 20 (0.42 ms)

Hi-speed USB 2.0 provides across-the-board compatibility with pretty much all laptops and desktops. The 24Ao is USB class compliant, which means you can enjoy OS-level USB compatibility and support, including iPad support (with an Apple Camera Connection Kit - sold separately). Since USB 2.0 devices are compatible with USB 3.0 equipped hosts, your 24Ao interface is a future-proof investment in your studio.

The 24Ao is equipped with a 48-channel digital mixer designed just like a large format mixing console. The 48 inputs can take signal from anywhere: the physical inputs on the 24Ao interface itself, audio channels from host software on your computer, audio network streams or even mixer outputs. The mixer provides 7 stereo aux busses, 3 groups, a reverb bus that can alternately serve as a 4th group, a Main Mix bus and a separate Monitor bus that can serve as a solo bus. In essence: capable and transparent mixing.

British analog mixing consoles are renowned for their musical EQ profiles. The 24Ao meticulously models these classic EQs to give you the very same, magical EQ response found on these coveted desks. Each input channel also provides a classic compressor module with optional peak/RMS operation. Groups and the Main Mix bus are equipped with MOTU's Leveler, an accurate model of the legendary Teletronix LA-2A optical leveling amplifier, known for its unique and highly sought-after Automatic Gain Control (AGC) characteristics.

With one click on the routing grid, you can route any source to any destination. Sources can be analog or digital inputs on the interface, computer channels, mixer bus outputs or audio network streams from other devices on the network. Destinations include interface outputs, host software inputs, mixer inputs or any other device (or computer) on the AVB network. You can even split any single input (or stereo pair) ot unlimited multiple output destinations.

The network port on the 24Ao introduces AVB Ethernet, the new industry standard developed by the IEEE for professional audio networking. Add a second MOTU AVB interface (24Ai, 24Ao, 1248, 8M or 16A) with a simple CAT5e or CAT6 ethernet cable, and 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.

The software that you use to control the 24Ao doesn't reside on your hard drive. It's a web app served from the hardware itself. This means you can control the onboard DSP, mixing, device settings and network audio routing from the web app software running in your favorite web browser on a laptop, table or smart phone connected by wire or Wi-Fi to your local area network. Use any web client on any platform - Mac, Windows, Linux, iOS, Android - as long as it shares the same network.

Connect an Apple Airport or other Wi-Fi router directly to the 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!

The large backlit 324 x 24 LCD screen 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.

The 24Ao is so flexible, it can serve many roles - in the studio, on stage and throughout an installation. The Quick Setup menu lets you instantly reconfigure the 24Ao for many common situations, from operation as a standard audio interface to serving as a network "snake" from one location to another. Once a preset is chosen, you can easily customize the routing grid and mixer settings to further suit your specific needs - and then save your own custom presets.

MOTU 24Ao Specifications:

  • Sample Rates: 44.1, 48, 88.2, 96, 176.4, 192kHz
  • Analog I/O: 24 channels (balanced, DC coupled), 3x DB-25 D-Sub and 6x 12-pin Phoenix
    • Dynamic Range: 123 dB
    • THD+N: -110 dB
    • Max Level: +20 dBu (digitally adjustable -24 to 0 dB)
    • Trim Range (in 1 dB steps): 24 dB (-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
  • Total I/O:
    • 24 analog + 48 digital (72 total) at 1x sample rates
    • 24 analog + 24 digital (48 total) at 2x sample rates
    • 24 analog + 0 digital (24 total) at 4x sample rates
  • Computer I/O: 1x USB 2.0 audio class compliant, USB 3.0 and iOS compatible
  • Sync I/O: 1x Word Clock in, 1x Word Clock out
  • Front Panel:
    • 5x Switches
    • 324x24 pixel LCD for level meters / menu nav
    • 1x AC power switch
  • Power: International 100 - 240V auto switching supply, 50 - 60 Hz, 0.5A max
  • System Requirements:
    • Mac:
      • 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 port
      • Compatible Software:
        • 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 & Reason
        • Steinberg Cubase
        • Cockos Reaper
        • Native Instruments Kontakt
        • Waves stand-alone apps (and plug-ins, via compatible host)
      • A large hard drive (at least 500 GB for recording)
    • Windows:
    • 1 GHz Pentium-based PC or faster
    • 2 GB RAM; 4 GB or more recommended
    • Windows 8 or later
    • Available high-speed USB 2.0 port
    • Compatible Software:
      • MOTU Digital Performer
      • Avid Pro Tools (version 9 or later)
      • Ableton Live
      • Cakewalk Sonar
      • Steinberg Cubase
      • Propellerhead Record & 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)
    • 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 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)

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