Is it possible amps sound different? Frequency response measurements say maybe.... Or do they?
To be fair, this is a garbage test, including subs not recalibrated between amps. The gain between the amps is slightly different, so the bass in the room slightly differs between tests. Could this be why people perceive a "fuller" sound between amps? Or is there enough variability above the crossover frequency (60hz plus rolloff in this case) to call differences audible. You decide.
The 2ch amp needs a 1.5db boost in the preout settings to match the AVR's internal amp gain I'm guessing, but we're in the ballpark anyway.
2ch amp- 1/12 octave pink noise averaged
