Specifications

Pro Tools Reference Guide44
Processing Capacity
The total processing capacity of a Pro Tools sys-
tem depends on the processing power of your com-
puter. Contact your dealer or visit www.avid.com
for the latest system requirements and compatibil-
ity information.
Pro Tools Capabilities with Different
Hardware Configurations
Pro Tools supports up to 32 channels of audio in-
put and output, but the available input and output
capabilities with Pro Tools varies depending on
your audio interface. For information about the in-
put and output capabilities of your audio interface,
refer to the documentation that came with your
hardware.
If you open a Pro Tools session created on a
Pro Tools HD system that contains more than the
number of tracks supported on your Pro Tools sys-
tem, audio tracks beyond the system’s voiceable
track limit will be automatically set to inactive.
Pro Tools HD with HDX
Hardware Acceleration
Each system requires at least one Avid HD audio
interface (sold separately). HDX systems can be
expanded by adding HDX cards to increase track
count and the amount of plug-in and mixer
processing, and by adding additional audio
interfaces.
Pro Tools HD Software
Capabilities with HDX Hardware
Acceleration
Pro Tools HD running with HDX hardware accel-
eration provides the following capabilities:
• Up to 256 channels of I/O depending on your
system
• Up to a total of 768 voiced audio tracks
• Up to 512 Auxiliary Input tracks
• Up to 64 Master Fader tracks
• Up to 128 VCA Master tracks
• Up to 512 MIDI tracks
• Up to 128 Instrument tracks
• Up to 64 video tracks per session
• 16-bit, 24-bit, or 32-bit floating point audio res-
olution, at sample rates up to 192 kHz
• Up to 7.1 surround mixing capability
• Automatic Delay Compensation (16,348
samples at 48 kHz)
• Fixed RAM Disk Cache allocation options
• No-latency monitoring
• Non-destructive, random-access editing and mix
automation
• Audio processing with up to 10 inserts per track
(any combination of real-time plug-in and hard-
ware inserts), depending on your computer’s ca-
pabilities
• Up to 10 sends per track
• Up to 512 internal mix busses for routing and
mixing
For details on transferring session material
between Pro Tools HD and Pro Tools sys-
tems, see “Sharing Sessions Created on
Different Pro Tools Systems” on page 402.