Interesting reading. Several of us made this mistake when starting. This is an excellent lessons learned for new audiophiles. Why don't A'gon create a lessons learned folder entitled "Audiophile 101". I learnt the expensive way.
High Current SS amps with input impedance = 200K
I'm looking to identify amps like this that would match optimally to an Audio Research sp16 tube pre-amp with output impedance of ~ 20K?