With Pro Tools - HDX, you get up to 5x more power per card than Pro Tools | HD Accel, so you can focus on your mixænot your mixeræand do much more with less. Create bigger, more complex mixes with 4x more tracks (up to 768 voices) Double your ins and outs with up to 64 channels of I/O per card (up to 192 total) Handle large plug-in-heavy mixes easily with 4x more Automatic Delay Compensation 5 In Stock