Preamplifier for the NAD C275BEE Power Amplifier


Looking for the musical and transparent solid state Preamplifier
for the NAD C275 Power Amplifier. I tried with the NAD C165 and Parasound P5
but the sound was one dimensional and no details. I have CD Player connected directly to the Amp.
The sound it excellent: details, high sound stage behind the speakers.
Problem is the volume since it's very difficult to adjust it (using variable input, 100 k Ohms).
Thank you in advance on suggestions. The budget is $2500.00, used or new.

topten
Of course, but I just don't want to complicate mi life.
I've seen my friends going crazy swapping the tubes every other day.