The Audio Critic Magazine measured a Behringer A500 amplifier(test measurements made using Audio Precision Analyzer and PowerCube). I thought that people here would be interested in the results since it appears to be a superb value.
Of special note...
-bridgable to use a high power monoblock
-balanced and unbalanced inputs
-rock steady stability into 4 ohm loads and into highly inductive/capacitive loads(required for some rare difficult loads that many recievers may have problems driving)
-$180 street price!
Signal:Noise: -99dB
Crosstalk: -55dB
Frequency Response: -0.3dB @ 10Hz, -0.1dB @ 20Hz, 0.0db @ 1000 Hz, -0.2dB @ 10kHz, 0.6dB @ 20kHz,-2dB @ 40kHz
138 watts @ 8 ohms @ 1000Hz @ 1.000% THD+N, both channels driven
120 watts @ 8 ohms @ 20Hz @ 0.030% THD+N, 1 channel driven
120 watts @ 8 ohms @ 1000Hz @ 0.025% THD+N, 1 channel driven
120 watts @ 8 ohms @ 20000Hz @ 0.045% THD+N, 1 channel driven
220 watts @ 4 ohms @ 1000Hz @ 1.000% THD+N, both channels driven
180 watts @ 4 ohms @ 20Hz @ 0.056% THD+N, 1 channel driven
180 watts @ 4 ohms @ 1000Hz @ 0.050% THD+N, 1 channel driven
180 watts @ 4 ohms @ 20000Hz @ 0.050% THD+N, 1 channel driven
Harmonics of THD are primarily 2nd order, with subsequent harmonics approaching or under -100dB.
Power output was tested from 0 degrees phase resistive load(results given above) and into other phase angles up to +/- 60 degrees. Little variation of output voltage occured, regardless of phase angle.
-Chris