Avid HD I/O Mods

Avid HD I/O Mods

From: $1,695.00

Released in October of 2010, the Avid HD I/O replaced the older Digidesign HD I/O as their flagship interface line. Read below for details on how we can take your interface to the next level!

  • Mod
  • Clock
  • Cables
  • Book

Configure Your Mod

Bundle a Micro Clock

Bundle in a Micro Clock MKII, MKIII, or MKIII XB and get a discount on your mod.

Bundle A Cable

Need a cable? Add one now.

Schedule Your Mod

Please note that you will need to ship your gear to arrive at our shop 1-2 business days prior to your chosen date.

Clock Architecture *

Analog I/O *

SKU: Avid HD I/O Categories: ,

We are offering the following modifications for the Avid HD I/O (8×8, 8×16, 16×16):


  • – New, high performance op-amps on EVERY analog input and output (line inputs and line outputs)
  • – New, high-grade op-amp decoupling capacitors on EVERY analog input and output (line inputs and line outputs)
  • – New, high-grade signal path capacitors on EVERY analog input and output (line inputs and line outputs)
  • – Proprietary decoupling on analog stage power rails
  • – Copper rails installed between EVERY analog input and output for shielding between channels (line inputs and line outputs)
  • – Improving the performance of the analog stage circuits makes a drastic difference for tracking, mixing, and mastering (expect amazing micro-dynamics and space)!


  • – Proprietary decoupling on all A/D and D/A converters
  • – Ferrite power filtration on all A/D and D/A converters
  • – Proprietary decoupling on digital stage power rails
  • – Your choice of FM (very low jitter) or XB (ultra low jitter) internal word clocks
  • – Our approach to converter decoupling reduces noise generated during the conversion process, leaving you with crisp, clear audio!

Hear your Avid HD I/O like never before!

Booking a Mod

A 50% down payment will be collected during checkout for booking a modification. The remaining 50%, plus return shipping, will be due when the modification is complete. You will be prompted to choose a mod date when you add a mod to your cart. After booking, you will receive an email confirming your chosen “mod date” and shipping details.

The interface is not included in the mod price. You must supply us with an interface to be modified.

Please read our full sales policies prior to booking a mod.

Mod Rating

We often get asked our opinion on how one interface compares to another, so we’ve decided to create a rating system based on subjective A/B listening tests. The scale is from 1-10, with “1” being unimpressive audio quality and “10” being true audio excellence. This is an exponential scale, so going from “1” to “2” isn’t nearly as big of a jump as going from “9” to “10”.
Please keep in mind, we only modify an interface if we can make a significant improvement to the sound. All of our ratings are ultimately a matter of opinion. To view how we rate all of our mods, click here.

  • Avid HD with FM Clock

    Pre 4.5
    Post 9
  • Avid HD with XB Clock

    Pre 4.5
    Post 10

Handcrafted in Chicago.