12 channels of AES/EBU, ADAT, S/PDIF, and FireWire digital I/O. 24-bit digital I/O. Over 80 - 5.1 presets including 5.1 reverbs. Effects up to 96kHz sampling frequency. Over 1,600 preset-algorithms: award-winning reverb, choruses, FM panners, sample-and-hold filters, vibratos, modulating delays, multiband compression, phase shifting, micro pitch shifting, vocoding, and much more. UltraShifter pitch shift and correction. Search-engine preset sorting. Monolithic Tandem processing mode. Building-block effects architecture. Anything-to-anything routing capability. Custom Scales capability. MIDI, BPM, and Tap Tempo beat sync. 174 second mono sampler (87 seconds phase-locked stereo). Looping, editing, and layering capabilities. VSIG and VSIG-X graphic editor/development tools. FireWire drivers for Mac and PC. Software channel-routing program. 4 channels of XLR and ¬" TRS inputs; s/n >110dB.