I would recommend a used Plinius SA-100 MKIII. Great sounding amp especially in class A. They are quite plentiful between $1500 and $2000 used. I own one and am VERY happy with it. Also a Rowland Model 2. A Model 2 usually is a bit more expensive used $1800 to $2500 used. Drop dead GORGEOUS in appearance. I have one also and am VERY happy with it. It is for sale with a BPS 2. Of course preferences are subjective and your associated components will influence the equation. Good luck!
