Magnitue and phase of frequency response at -5dB input (just before the onset of clipping at -4dB [given my measurement chain]) The slight bend in the magnitude is a tiny fraction of a dB when looking at it more closely. So basically it's flat as ruler.
Output of the IMD test with 19/20kHz input signals. Basically the only thing there is the rectifier hash (multiples of 60Hz) at about 100dB down. Not bad! (Noise floor of my measurement chain if the loop back test is to be believed is -130dB.)
2nd and 4rd harmonic content of THD. Basically about 100dB down at -5dB input. Towards 20kHz it still has about 90 good dB. Also pretty awesome, I'd say.
Same data as in the previous image now shown as percentage distortion with total and 2nd and 3rd broken out. (I looked at higher order harmonics as well, but they are pretty small.)
Distortion (THD+N) into 8Ohm (purely resistive). Note the 2.83V is 1W in this chart. Towards the right side the curve should go through the roof. My sound card won't let me seriously overdrive it. So the bottom of the plot at 13.5V is about -5dB input. Going higher clipping sets in. Nasty waveforms...
The CCIF IMD test. Again the right most part of the plot is bogus. Things are good until about 14V or so (in other words 40V p-p is still good output; somewhere at 42-44V p-p the clipping really kicks in).
Closeup of the noise spectrum with no input. It's all rectifier hash at about 100dB down. If that weren't there we'd just be looking at the noise floor of my measurement chain. This was done with 48 linear averages. I hate 60Hz.