Adcom GFA-555MS - Manual (Page 19)

GFA-555ms SPECIFICATIONS
Power Rating (To FTC Requirements)
125 watts continuous average power into 8 ohms at any frequency between 20Hz and
20kHz with both channels driven at less than 0.04% THD.
200 watts continuous average power into 4 ohms at any frequency between 20Hz and
20kHz with both channels driven at less than 0.05% THD.—
400 watts continuous average power into 8 ohms at any frequency between 20Hz and
20kHz at less than 0.09% THD, bridged.—
IM Distortion (SMPTE)
1 watt to 125 watts into 8 ohms ≦0.009%
1 watt to 200 watts into 4 ohms ≦0.009%
IM Distortion (CCIF, Any Combination from 4kHz to 20kHz)
125 watts into 8 ohms ≦0.002%
200 watts into 4 ohms ≦0.003%
THD + Noise at 125 Watts into 8 Ohms
20Hz 0.004%
1kHz 0.003%
10kHz 0.006%
20kHz 0.020%
THD + Noise at 200 Watts into 4 Ohms
20Hz 0.005%
1kHz 0.004%
10kHz 0.020%
20kHz 0.030%
IM Distortion, Bridged (SMPTE)
1 watt to 400 watts into 8 ohms ≦0.05%