Avid HD I/O

8 x 8 x 8 Audio Interface for Avid's Pro Tools|HD, with Analog and Digital I/O
Avid HD I/O image 1
Avid HD I/O image 1
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Avid HD I/O
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A Premium Interface for Your Pro Tools|HD Rig!

The next generation of Pro Tools|HD is here! The HD I/O from Avid picks up where the 192 I/O left off, offering improved fidelity and lower latency than its predecessor. Avid also endowed the HD I/O with a slick, soft-knee analog limiter. This dynamics processor, named Curv, catches fast transients, letting you track hotter. No amount of processing power can muscle past poor A/D conversion or clipping. The HD I/O manages both tasks for you, and it handles them beautifully. This version of the HD I/O is equipped with eight channels of analog I/O and eight channels of digital I/O.

Avid HD I/O 8 x 8 x 8 Pro Tools|HD Audio Interface Features at a Glance:

  • High-performance AD/DA converters

  • Redesigned analog section with state-of-the-art filtering and design
  • Power supply improves noise performance and jitter
  • Lower latency
  • Updated digital card
  • 192kHz AES/EBU and S/PDIF single-wire
  • ADAT S/MUX II and S/MUX IV (enclosure and expansion card)
  • "Curv" analog limiting circuitry on input
  • 8 analog inputs (using DB-25)
  • 8 analog outputs (using DB-25)
  • 8 channels of AES/EBU I/O (supports 192kHz single-wire and dual-wire)
  • 8 channels of TDIF I/O
  • 8 channels of ADAT I/O (supports S/MUX II and IV)
  • Additional digital I/O: two channels of AES/EBU I/O (supports 192kHz single-wire), two channels of S/PDIF I/O, eight channels of ADAT I/O (supports S/MUX II and IV)
  • One empty bay for I/O expansion
The next generation of Pro Tools|HD is here with Avid's HD I/O!

Additional Media

HD I/O Guide
Pro Tools 12.4 Reference Guide
Telefunken Vintage ELA M 250E vs. New ELA M 251E Mic Comparison
Vintage Neumann U47 vs. New Telefunken U47 Mic Comparison
Big News From Avid

Tech Specs

Computer Connectivity PCI
Form Factor Rackmount
Simultaneous I/O 16 x 16
A/D Resolution 24-bit/192kHz
Analog Inputs 1 x DB25
Analog Outputs 1 x DB25
Digital Inputs 8 x AES/EBU (DB25), 8 x TDIF (DB25), 8 x ADAT (Optical), 1 x AES/EBU (XLR), 1 x S/PDIF (Coax), 8 X ADAT (Optical)
Digital Outputs 8 x AES/EBU (DB25), 8 x TDIF (DB25), 8 x ADAT (Optical), 1 x AES/EBU (XLR), 1 x S/PDIF (Coax), 8 X ADAT (Optical)
Clock I/O 1 x Word Clock (In/Out on BNC), 1 x Loop Sync (In/Out on BNC)
Rack Spaces 2U
Manufacturer Part Number 9900-58669-40

Customer Reviews

Based on 4 reviews
Write your review

Fantabulous Sound..Killer Sounding..!!!!!

Amazing Sounds win the Track is Brought for Mastering, esp, when an EDM is produced.....Working with the HD , one thing which i've Understood, is that....No Compromise on the Audio Frequencies/Signals Produced..Simple Setup,Hassle Free......3 Cheers to AVID HD....Killer Sounds..!!!!!:))
Music background: Sound/Recording Engineer,Remixer

Awesome Avid HD I/O 8+8+8

Super sound, very easy to set up
Music background: full-time performer with a project studio


Although I was not overly impressed with the quality from the Digi 192, I decided to forgo the third party I/O option and "buy in" to the Avid hype that this was a completely redesigned next-generation interface and not simply a re-branded 192 and I'm glad that I did. Although I've not A/Bed this unit with the new Apogee Symphony and upper end gear like Meitner, etc, I can say it's EXTREMELY quiet, very transparent, and a huge step up from their previous generation interfaces!
Music background: Studio Owner


my 192 and XMON had operated flawlessly for seven years. when the XMON finally winked out i decided to also replaced my 192 with an HD I/O as a preventative move. my main concern in making the changeover was getting tangled in all the sometimes esoteric in/out settings, something i handn't had to touch since the initial configuration. of course, the new unit slipped in seamlessly and all was well, immediately. but what really improved was the imaging. compared with the 192 it's like a few asymmetrical layers of gauze were peeled away to reveal an infinitely more concise soundstage, making mixing a real pleasure. sensitivity to small moves in eq and dynamics were also suddenly and profoundly more intelligible. the HD I/O also runs cooler and quieter than the 192. how the it compares to other brands i can't say, but in terms of AVID's progress since the awkwardly pronounced DIGIDESIGN days, feel free upgrade with confidence.
Music background: sound artist
See also: pro tools hd interface, Avid, Avid Pro Tools HD Interfaces