Howard Ferstler said:

I did very carefully level match the unit against a Yamaha
integrated amp. Using pink noise, you can get the levels
close enough where the four signals (one in each channel
with each amp) sounded the same. And I mean really the same,
which shows that the frequency response of each amp was
subjectively identical. The levels were then matched closely
enough to go on and do some AB comparing with music.

The result, well, the two amps sounded the same (surprise,
surprise), even when I adjusted levels so that both were
occasionally bumping up against their power limits with some
material.

Like I told you, just write tha it sounds the same as your Yamaha and
be done with it.

The manufacturer of said amp will thank you for your thorough review.

--
Sander deWaal
"SOA of a KT88? Sufficient."