Winsound,
So much depends on room size, music genre and preferred listening levels.
My Coincident speaker is 94 db sensitive with a 14 ohm load. I've driven it
with a 40 watt PP El34 amp and a 100 watt (60 watt triode mode) KT 88/
6550 PP amplifier.The Coincident Frankenstein sounds better than both of
these higher power amps. It's more natural and pure sounding, has
superior tone, harmonic overtones, inner detail and nuance. The sense of
realism, emotional involvement, life and energy are just better. It is more
music and less hifi in the presentation. The 100 watt amp can ultimately
play louder (moot point in my case, the Frankenstein is more than enough)
and has more bass weight and impact (but really not a big difference as I
would have thought).overall the SET put my push pull amplifiers into the
retirement closet(it's been 4 years).
Depending on what you like and how you hear, you may or may not agree
with my conclusions. Israel Blume specifically designed this 300b SET to
drive all of his speakers effortlessly and he succeeded . Having said this
you could still prefer another amplifier choice, for a variety of personal
reasons. It'd be ideal if you could audition your list of worthy amplifiers and
let your ears decide.
Regards,