so Solid state is not necessarily the problem
Yes, I think you're right. Better cables did improve the performance of the deck and as I said earlier with my string section test, this CDP is pretty damn smooth.
Arnettpartners and Timrhu; so you can relate to my issue with high freqs. I have Hyperacusis, so I've been looking for a solution w/o installing a EQ. I can hear up to 19kHz, but it's actually a small range of high frequencies that bother me.
I guess I could change preamp tubes (again) and roll off the highs. Short of that, I don't know.