If you are looking for a high-quality ProTools HD device, the Digidesign 192 I/O Digital Recording Interface makes a great choice because it offers a variety of features, including 50 possible outputs. It also allows you to record up to 16 simultaneous channels in HD, so you’ll have complete creative freedom. The digital I/O options on the 192 I/O are vast and include eight channels of AES/EBU, eight channels of TDIF, and a full 16 channels of ADAT. This interface has a limiter, which is a must if you want to create CD-quality recordings. Moreover, it’s even possible to expand the interface by connecting another Digidesign 192 via the unit's expansion port.