Adcom GFA-555MS - Manual (Page 20)

IM Distortion, Bridged (CCIF, Any Combination from 4kHz to 20kHz)
400 watts into 8 ohms ≦0.005%
THD + Noise at 400 Watts into 8 Ohms, Bridged
20Hz 0.004%
1kHz 0.004%
10kHz 0.020%
20kHz 0.050%
Frequency Response @ 1 Watt into 8 Ohms
10Hz to 20kHz +0. -0.25dB
Power Bandwidth (-3dB) 10 Hz to 100kHz
Dynamic Headroom into 4 Ohms 1.3dB
Signal-to-Noise Ratio, "A" Weighted
125 watts into 8 ohms ≧102dB
Gain 27.2dB
Input Impedance 100,000 ohms
Input Sensitivity
125 watts into 8 ohms 1.38V rms
1 watt into 8 ohms 123mV rms
Damping Factor
20Hz to 20kHz >400
Rise Time
5kHz,90V peak-to-peak square wave, 20% to 80% 2.3us
Semiconductor Complement 34 transistors, 2 zener diodes,
13 diodes, 2 ICs, 2 diode bridges
Power Consumption (Continuous, Both Channels Driven)
Quiescent 48VA
Maximum 900VA
125 watts into 8 ohms 420VA
200 watts into 4 ohms 730VA