110db @ 4 watts
113db @ 8 watts
116db @ 16 watts
119db @ 32 watts
122db @ 64 watts and you start losing your hearing!
Follow the pattern.......
Every 10db doubles the perceived sound pressure/volume.
Jeez, do folks really listen to music at those levels? I thought ear damage starts to occur at over 100db? I suppose you are listening more than a meter away though, and you're talking about headroom here. But still, for me, I don't think with my musical preferences I'd every use those ceilings much.
I tried a class couple of class A ss amps with my LaScalas; a Bedini 25/25 and a Pass Aleph 5. Both were OK but, being used to listening with SET amps with the Scalas neither were anywhere near compelling enough to make me want to give them much of a chance. Neither threw a soundstage like the SET amps, and both grated on me overall. I found myself fatigued after listening for a few hours, more so on the Bedini than on the Aleph.
Marco