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Avid HD I/O 16x16 Digital Pro Tools HD / HDX Audio Interface

HDX Audio Interface

$412.00 Price Tier: Standard

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Page last updated Jun 29, 2026

Pricing and availability

We compare 600+ stores and found this item at 1 store. Prices updated June 29, 2026.

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5.0 (1)

$412.00 15 available Used

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Average Price: $412

Standard/Professional

$150

$501+

Price Tier

In the Audio Interfaces category, Avid HD I/O 16x16 Digital Pro Tools HD / HDX Audio Interface is priced in the Standard/Professional range. This is quality gear at a fair price point, suitable for beginners, hobbyists, and pros alike.

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Description

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Dive into the world of professional audio recording with the Avid HD I/O 16x16 Digital Pro Tools HD / HDX Audio Interface, a powerhouse designed to seamlessly integrate with your Pro Tools HD or HDX system. This high-performance interface is tailored for the discerning audio engineer or musician seeking pristine sound quality and robust connectivity. With 16 channels of digital I/O, it provides unmatched flexibility, allowing you to connect and manage a wide range of digital audio sources.

Engineered with precision, the Avid HD I/O 16x16 Digital ensures minimal latency and maximum audio fidelity, making it an essential tool for both studio recording and live sound environments. Its versatile configuration options support various digital formats, including AES/EBU, TDIF, and ADAT, ensuring compatibility with your existing gear. Whether you're recording a full orchestra or a solo artist, this interface provides the clarity and depth needed to capture every subtle nuance.

Key Features:

16 channels of digital I/O for comprehensive connectivity
Compatible with Pro Tools HD and HDX systems
Supports AES/EBU, TDIF, and ADAT digital formats
High-quality converters for pristine audio fidelity
Low-latency performance for seamless recording and playback
Versatile configuration options for tailored setups
Rugged build quality for reliable performance in any environment

Product specs

Brand	Avid
Model	HD I/O 16x16 Digital Pro Tools HD / HDX Audio Interface
Year	2010s
Categories	Audio Interfaces
Bit Depth	24-bit
Bus-Powered	No
Compatibility	Windows, macOS
Computer Connectivity	DigiLink
Digital Input Format	ADAT/Optical, AES/EBU, S/PIDF
Digital Output Format	ADAT/Optical, AES/EBU, S/PIDF
Electronics	Digital
Format	19-inch Rackmount
Number of Analog Inputs	0
Number of Analog Outputs	0
Number of Channels	32
Number of Digital Inputs	44
Number of Digital Outputs	44
Number of Headphone Outputs	0
Number of MIDI Inputs	0
Number of MIDI Outputs	0
Number of Mic Preamps	0
Sample Rate	192 khz
Simultaneous I/O	16 x 16

FAQs

What digital input formats are supported by the Avid HD I/O 16x16 Digital interface?: The Avid HD I/O 16x16 Digital interface supports ADAT/Optical, AES/EBU, and S/PIDF digital input formats.
Is the Avid HD I/O 16x16 compatible with both Windows and macOS?: Yes, the Avid HD I/O 16x16 Digital interface is compatible with both Windows and macOS systems.
How many simultaneous input and output channels does the Avid HD I/O 16x16 support?: The Avid HD I/O 16x16 supports 16 simultaneous input and output channels.
Does the Avid HD I/O 16x16 Digital interface include any analog inputs or outputs?: No, the Avid HD I/O 16x16 Digital interface does not include any analog inputs or outputs; it is a fully digital interface.
What is the sample rate capability of the Avid HD I/O 16x16 Digital interface?: The Avid HD I/O 16x16 Digital interface supports sample rates up to 192 kHz.
How does the Avid HD I/O 16x16 connect to a computer?: The Avid HD I/O 16x16 connects to a computer via DigiLink connectivity.

Videos

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Avid HDX System - HD I/O 16x16 and 8x8x8 Converter Systems - Video Demo

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Reviews

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Owner Insights

We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about Avid HD I/O 16x16 Digital Pro Tools HD / HDX Audio Interface.

Setup and maintenance

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Troubleshooting involves swapping cards to isolate faults; card issues are common, and used replacements cost around $500.
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Comparisons

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The Lynx Aurora 16HD-LT is preferred by some users for its performance and compatibility, and it resembles Avid's HD I/O in Pro Tools.
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The Apogee Symphony converters are noted for providing up to 48x48 analog I/O with additional digital AES, offering a flexible alternative to Avid HD I/O.
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Build quality

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Avid HD I/O units are not designed for easy repairs; internal components are not user-friendly for servicing.
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Value and pricing

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Owners suggest the Lynx Aurora 16HD-LT as a cost-effective alternative, priced around $1,000, offering similar sound quality.
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Owners find the 192 to be a cost-effective choice for high-quality conversion, despite Avid's discontinuation of support.
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Features and functionality

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The Avid HD I/O can only support up to 16x16 analog I/O per unit, requiring additional units for higher channel counts.
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The MTRX unit allows for expanded I/O with additional cards, making it suitable for complex setups but involves significant investment.
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The MTRX Studio, while similar, may not meet extensive analog I/O needs without ADAT/Dante expansion, suggesting a demo before purchase.
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The optical port on the 192 chassis is limited to S/PDIF stereo, not ADAT, due to recent Pro Tools updates.
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The digital I/O card in a 192 allows for an additional 8 channels via AES/EBU or ADAT optical, selectable in pairs in the I/O window.
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Use cases and applications

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Users aiming for 64 in/32 out configurations may need to consider multiple units or alternative solutions like a console or MTRX setup.
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Studios often configured 192 units as 16 in/8 out and 8 in/16 out combinations to maximize flexibility.
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User experience

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Despite being discontinued, the 192 converters are still praised for their quality and affordability compared to HD I/O.
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Software and compatibility

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DigiLink ports can carry up to 32 I/O channels, but only two devices can be daisy-chained per port.
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The 192's optical ports, now mostly limited to S/PDIF, might become less functional with future Pro Tools updates, although DigiLink support is expected to continue.
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