For sale is one Avid Pro Tools HDX PCIe Card kept in a smoke-free professional recording studio.

Pro Tools HDX is the new generation of DSP-based PCIe interface card for Pro Tools, replacing the legacy Core and Accel PCIe cards.

With one card, you can mix up to 256 voices. If you need more tracks and power, you can expand your Pro Tools HDX system with up to three cards. With two cards, you can mix up to 512 voices, and with three cards, you can have up to 768 voices, eliminating the need for an expansion chassis to support very large sessions. Each Pro Tools HDX card has two DigiLink Mini connectors, which can support up to four interfaces - or up to 12 interfaces (192 channels of I/O) with a three-card system.

While the DSPs handle mixer and real-time plugin processing at an amazing 6.3 GHz aggregate clip. The result is dedicated power to mix the biggest sessions. And immense performance to record directly into them—with real-time effects.

Avid Pro Tools | HDX Core PCIe Card features as listed on manufacturers website:

• Incredible DSP power for Avid's AAX plug-in format
• 3-7 times the power of an HD Accel system on a single PCIe card
• FPGA mix processor frees up DSP for powering plug-ins
• Up to 256 voiceable tracks per card
• Up to 64 channels of simultaneous I/O per card
• Connect up to 4 HD interfaces per card
• 64-bit floating-point summing sounds amazing
• 32-bit floating-point processing between plug-ins preserves quality and dramatically increases headroom
• Expand your system by adding more HDX cards
• Compatible with Pro Tools | Ultimate software