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192 I/O SPEC
http://www.digidesign.com/index.cfm?langid=100&itemid=4892

A/D

Sample Rate: 44.1, 48, 88.2, 96, 176.4, 192 kHz ±10%
Dynamic Range: 120 dB (A-weighted), 118 dB (unweighted); see Notes 1 and 2
THD+N: 0.00035% (-109 dB); +21 dBu @ 997 Hz; see Note 1
THD+N: 0.00035% (-109 dB); +21 dBu, 20 Hz ? 20 kHz; see Note 1
Frequency Response: ±0.05 dB @ +2 dBu, 20 Hz ? 20 kHz; see Notes 1 and 3

D/A

Sample Rate: 44.1, 48, 88.2, 96, 176.4, 192 kHz ±10%
Dynamic Range: 118 dB (A-weighted), 115 dB (unweighted); see Notes 1 and 4
THD+N: 0.00056% (-105 dB); -1 ' @ 997 Hz; see Note 1
Frequency Response: ±0.05 dB, -20 ', 20 Hz ? 20 kHz; see Notes 1 and 3
Sample Rate = 48 kHz, Noise BW = 22 Hz ? 20 kHz unless otherwise noted, Tambient = +25

Fireface 800
http://www.rme-audio.com/english/firewire/ff800.htm

Dynamic range AD: 109 dB RMS unweighted, 112 dBA
THD AD: < -110 dB (< 0.00032 %)
THD+N AD: < -104 dB (< 0.00063 %)
Crosstalk AD: > 110 dB

Dynamic range DA: 116 dB RMS unweighted, 119 dBA (unmuted)
THD DA: < -103 dB (< 0.0007 %)
THD+N DA: < -100 dB (< 0.001 %)
Crosstalk DA: > 110 dB