As others have mentioned, power requirements also depend on the size of your room & volumes you enjoy. In addition, the type of music is a consideration. Quieter acoustic music generally uses little watts but music w/ big dynamics and / or big bass can use 10 times the average power on peaks which is the primary reason for truly needing hundreds of watts/ channel.
How much power needed to drive 91db speakers?
Sonus Farber lists the sensitivity of my speakers at 91 db SPL@ 1 meter @4 ohms. They also say I should use 50-450 watts of power. My PS Audio amps pump out 500 watts @4ohms, so the max isn’t a problem, but if I switched to something 15-50 class A watts, would that be more than enough power?
Thanks in advance.