Honestly, I HAD an Adcom GTP-600 Surround pre-amp.
It was not good at all! My Yamaha CX-1000 was
alot better, until 1 channel went out on the pre-amp.
My Pioneer C-91 is ALOT better than the other 2.
With a signal-to-noise ratio of 109db. to boot.
It has AIR, in the midrange, alot more treble,
and better presence, AND and much better remote, as well.
It was not good at all! My Yamaha CX-1000 was
alot better, until 1 channel went out on the pre-amp.
My Pioneer C-91 is ALOT better than the other 2.
With a signal-to-noise ratio of 109db. to boot.
It has AIR, in the midrange, alot more treble,
and better presence, AND and much better remote, as well.