bsatowWell most amps worth a damn are within 1db 20Hz to 20kHz but maybe these specs from avhifi will answer your question:
Power Rating (To IEC-CEA-490A Requirements)
70 Watts continuous average power into 8 ohms at any frequency between 20Hz and 20kHz with all channels driven at less than 1.0% THD. 100 Watts continuous average power into 4 ohms at any frequency between 20Hz and 20kHz with all channels driven at less than 1.0% THD.
Bridged Power: 175 Watts continuous average power (one channel) into 8 ohms at any frequency between 20Hz and 20kHz with at less than 1.0% THD. IM Distortion
(SMPTE) 1 watt to 70 watts into 8 ohms 0.05%. IM Distortion (CCIF, Any Combination from 4kHz to 20kHz) 70 watts into 8 ohms 0.01%.
Frequency Response at 1 Watt into 8 Ohms 10Hz to 20kHz +0, -0.25dB.
Power Bandwidth (-3d B) 5Hz to 130kHz
Dynamic Headroom Into 4 Ohms 1.8 dB. Signal to Noise Ratio, A-Weighted 70 watts into 8 ohms 100dB.
Gain 29dB.