Is it too much to ask....

Wow, Viridian, I am surprised at your response. Certainly the items you mentioned are important. But, after all, an amp's main job is to amplify the signal. And how hard would it be to simply list the mfgr's output ratings?

-RW-

Power gives some idea, but it is pretty much useless specification without knowing how it was measured. My amp, for instance, has module rated at 200W/4ohm but only 55W according to FTC measurement (that requires 1 hour preheat). It is possible for the lower continuous power amp to be actually louder. Music power delivered to speakers is only a few percent of peak power (unless anybody listens to sinewaves). What about distortions? Bel Canto makes the same amp as Rowland 102 (same B&O module) with 300W rating since they specify it at 10% distortions. In addition overdriving some amps is painful (odd harmonics) while other amps (including mine) have soft clipping. There is also not that much difference when power doubles (only 22% of perceived loudness). Perhaps it would be better to know peak power and max current but most often it is not available.