Quality inversely related to power output?

In some cases a manufacturer offers two amps with different power ratings, and the only difference is the "rail" voltage (which means a different power supply). Sometimes, but not always, the output transistors may be a different type. But all the input and gain circuitry is the same.

If the quality of an amp is inversely proportional to its power output, then the corollary would be that two amps of equal power are of the same quality. Obviously not true, because power output depends on the connected speaker impedance and the quality of sound depends mostly on power supply, voltage regulation and output devices and the circuit topology that ties them together.

Hi Shadorne, the Classic Audio Loudspeaker model T-1 or T-3 would suit the bill nicely :) My contention though is once the speaker efficiency has fallen below about 89 or 88 db, there really isn't anything out there that is affordable (meaning: under $50K) that will really sound like live music on that speaker.

Live music has power and impact (a live orchestra can easily hit peaks of 115db, something that audiophiles would cringe at in their own living rooms, but that is a discussion for another thread).

Getting those few extra 'gold plated decibels' is the issue. IMO its easier and more effective to start with a more efficient speaker.

And yes, the 'all other things being equal' is also quite challenging. There are so many ways to go about things in this sport :)