Power to push limits.

In recording studios and on soundstages, Pro Tools | HDX Systems make the world’s biggest productions possible. Engineered for the highest performance, customization, and expansion, they enable music and audio post professionals to deliver their most demanding work. Without constraint.

  • System Requirements

    Avid qualified PCIe- or Thunderbolt-equipped Mac or Windows computer (see details)

  • Specifications

    DSP processing

    18 x 350 MHz TI processors per HDX card
    (6.3 GHz aggregated processing)


    0.7 ms

    Simultaneous voices/audio tracks**

    @ 48 / 96 / 192 kHz - 256 / 128 / 64
    HDX Classic: scalable up to 768 @ 48 kHz with three HDX cards
    HDX Hybrid Engine: 2,048 at all sample rates

    Channels of I/O

    64 channels of DigiLink I/O
    Scalable up to 192 channels with three HDX cards

    Automatic Delay Compensation for hardware inserts

    16,383 samples

    Processing depth

    32-bit floating point

    Mixer depth

    64-bit floating point

    Software requirements

    Pro Tools Ultimate

    * Latency calculated using a 96 kHz sample rate with a 64-sample buffer. Tests run using Pro Tools | HDX and Pro Tools | HD Native with Pro Tools | HD I/O.

    ** Audio tracks based on sample rates of 48/96/192 kHz, respectively. Installing additional cards will increase track counts to the maximum allowable.

Uncompromising performance.

Pro Tools | Ultimate is the platform. The HDX hardware accelerator is the engine. And it is built to perform. 18 DSP processing cores. Up to 2,048 voices with the Hybrid Engine. Up to 192 I/O channels. 0.7 ms latency. From recording the biggest bands to mixing Dolby Atmos, against the tightest timelines, this is the power to remove barriers so you can create your greatest work.


With 18 DSP cores and two high-performance FPGA chips, the Pro Tools | HDX PCIe card is a powerhouse. And it’s finely tuned to process thousands of audio streams at staggering speeds. The central FPGA rapidly routes signal around the card—one sample at a time—with no latency. While the DSPs handle mixer and real-time plugin processing at an amazing 6.3 GHz aggregate clip. The result? Dedicated horsepower to mix the biggest sessions. And immense performance to record directly into them—with real-time effects.


Capability you can count on.

The HDX Engine matches its phenomenal performance with rock-solid reliability. A second FPGA guarantees 256 voices per PCIe card. And it streams audio to and from your host CPU at uniform 32-bit float precision, preserving the highest possible audio quality throughout the system’s gain structure. So when the work is mission critical and you press record, you’re backed by exceptional, unwavering capability. You can depend on it.

Power. Plus more power.

HDX Systems support up to three PCIe cards, so you can meet the scope of any project. Record orchestras. Mix immersive audio. And expand to the extremes with access to 2,048 voices with the Hybrid Engine. It’s extraordinary, scalable capability to make the most demanding music and audio post productions possible.


DigiLink and DigiSerial. High-performance ports.

The HDX PCIe card connects to Pro Tools hardware over uniquely designed connectivity formats. Two DigiLink ports provide 64 channels of I/O and ensure the highest fidelity audio in and out of the HDX Engine. DigiLink also allows Pro Tools to automatically compensate for hardware insert delays. While the DigiSerial Port is part of a patented technology, providing unmatched sample-accurate synchronization of video frame edges with audio.

Save thousands of dollars by eliminating the need for expensive synchronizers. With Satellite Link, you can control up to 12 Pro Tools | HDX systems from a single transport over a simple Ethernet network. And now Satellite Link is included with Pro Tools | HD 11 and higher software.


Satellite Link also integrates with Video Satellite workflows, enabling you to control a Media Composer with Video Satellite system and up to 11 Pro Tools | HD systems as one, with near sample-accurate lock when you add SYNC HD. It's the perfect solution for post-production and music environments with multiple operators and multiple Pro Tools | HDX systems.

Learn More


HDX Options

HDX Options

Learn more

  • * A Sync X or Sync HD interface resolved to "blackburst" is required on each Pro Tools | HD system for near-sample accurate lock.
  • Sync X or Sync HD interface for near sample-accurate lock

  • © 2024