I agree with Semi. Go with a used Forte Model 4. It's built like a tank and is definitely one of the sweetest-sounding, highly detailed amps you'll ever hear. The detail is "real detail", not brightness masquerading as detail. But don't let it's sweetness fool you, it's dynamics are uncompromising. Yes, there are amps, which outperform it..... for several thousand bucks.
p.s. As with any used gear, just make sure it's guaranteed.