Avid Pro Tools HD I/O 8x8x8: (8 analog I/O & 8 Digital I/O), from Avid

   16 total audio paths
o Line-level I/O (DSUB): 8 ch.
o AES I/O (DSUB): 8 ch.
o ADAT/SUMX I/O: 8 ch. @ 48k, 4 ch. @ 96k, 2 ch. @ 192k
o TDIF I/O: 8 ch.
o AES I/O (enclosed): 2 ch.
o S/PDIF I/O (enclosed): 2 ch.
o ADAT/SMUX/Optical S/PDIF I/O (enclosed): 8 ch. @ 48k, 4 ch. @ 96k, 2 ch. @ 192k

• Curv soft knee limiter
  
• SRC on AES, and TDIF DSUB inputs
  
• Word Clock I/O: 2
  
• Loop Sync I/O: 2
  
• Input/output cal trims: one set
  
• DigiLink Mini Connector: Primary and Expansion
  
• One free expansion slot available for ADC, DAC or Digital card

HD I/O is the next-generation flagship audio interface for Pro Tools|HD, delivering higher fidelity audio and lower latency performance than its predecessor, the 192 I/O. HD I/O offers 16 channels of I/O, and comes in one of three configurations to provide ultimate flexibility:

1. 8x8x8: 8 analog I/O and 8 digital I/O

2. 16 x 16 analog

3. 16 x 16 digital
HD I/O also comes with a newly designed high quality soft-knee analog limiter feature, Curv, which catches fast transients and allows for tracking hotter signals. HD I/O moves beyond the market competition by delivering best-in-class digital audio conversion and clocking that integrates into Pro Tools HD software and offering the most flexible I/O arrangement.