Avid Pro Tools|HD I/O 8x8x8 Interface for PT|HD or HDX


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Dale #:AVID-9900-58669-40

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  • The perfect choice when you need a balance of analog and digital I/O for your music or post-production projects, with the option to expand your I/O.

    HD I/O is a high-performance Pro Tools | HD Series audio interface that's designed to completely integrate with Pro Tools | HD systems. The interface features premium A/D and D/A conversion and advanced circuitry, giving you pristine sound quality and clarity and the lowest possible latency. Plus, with three configurations to choose from and a modular design, you can expand and customize the interface for your connection needs.


    • Pristine audio clarity and ultra low latency through state-of-the-art A/D and D/A conversion, premium analog circuitry, and meticulous attention to design
    • Adapt the interface for your needs choose from three configurations:
      • Get a balance of analog and digital I/O with HD I/O 8x8x8
      • Maximize your analog I/O with HD I/O 16x16 Analog
      • Go all digital with HD I/O 16x16 Digital
    • Versatile digital I/O on all interfaces, with built-in sample rate conversion
    • Expand or customize the I/O with analog or digital option cards
    • Completely integrates with Pro Tools | HD family systems for full input, output, and routing control
    • Track hotter signals and smooth out sounds with Curv, a new built-in soft-knee limiter
    • Keep things in sync with dedicated Word Clock and Loop Sync I/O
    • Keep an eye on your levels easily through 32 4-segment metering LEDs
    • Robust 2U rack-mountable chassis
    • Connects to Pro Tools | HD family systems through a DigiLink Mini connection (cable and adaptor included)

    Hear what you've been missing
    A sonic improvement over its audio interface predecessors, HD I/O features premium A/D and D/A conversion, so you can achieve higher audio fidelity, extensive dynamic range, super-low jitter, and the absolute lowest possible latency in your sessions. With certain configurations, you also get built-in sample rate conversion and a soft clip feature for worry-free recording. And using Curv, a new built-in soft-knee limiter that catches even the fastest transients, you can track hotter signals and smooth out inconsistent levels from incoming sources.

    The connections you need now and later
    HD I/O comes in three configurations, so you can choose the interface that best suits your connection needs. What's more, you can expand your analog or digital I/O by simply installing an HD I/O option card into any empty bay. HD I/O 16x16 Analog cannot be expanded, as all four bays are occupied.

  • Analog inputs 8
    Analog outputs 8
    AES/EBU I/O 8 + 2
    AES single-wire (192 kHz) Yes
    S/PDIF I/O 1 In + 1 Out (coax or optical)
    ADAT I/O 8 + 8
    S/MUX S/MUX II and IV
    SRC 8 channels (digital card)
    Word Clock I/O 1 In + 1 Out
    Loop Sync I/O 1 In + 1 Out
    Digital interface DigiLink Mini
    Dynamic range ADC 122 dB
    Dynamic range DAC 125 dB
    THD+N ADC -114 dB (0.0002%)
    THD+N DAC -110 dB (0.00032%)
    Frequency response ADC 20 Hz – 20 kHz N/A 
    (+/-.03 dB)
    Frequency response DAC 20 Hz – 20 kHz N/A 
    (+/-.15 dB)
    Expansion 1 empty bay
    Curv Yes
    Soft clip Yes
    Cal trims Yes
    Metering 32 4-segment LEDs
    Internal fan Yes
    Chassis 2U rack-mountable
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