"Joseph Oberlander" wrote in message
link.net
Arny Krueger wrote:


For a quiet house that is plenty.


So is a 100 milliwatt transistor radio. But, who are you to say what
is plenty?

Gotcha!

Who are you either?

I spoke in terms of numbers, and I'll stand by them.

My stereo has a set of meters on it and at house-filling levels,
it barely peaks at 10 watts in class A mode.


Peaks on meters are typically a tiny shadow of the power levels involved in
actual musical peaks.

40wpc is fine if you don't want to listen very loudly.

agreed, but speaker efficiency matters.

40 wpc amps match up well for home listening with 96 dB/w speakers.

Modern speakers efficiency average just below 90 dB/w. IOW you want 6 dB or
4 times more power.

Low efficiency speakers like my NHT 2.5s, Magnepans, or Quad ESL run in the
low 80s, at least 4 times more power than average.