I've had excellent results with a ss pre pushing a tube amp. I've found this combo has great synergy, with the appropriate pre, lending a little detail and bass depth and tautness while not detracting form the harmonics of the amp. So I guess I'm a "solid state on top" kinda guy. I guess when I get older, it's possible I may become a "tube on top" guy. But then again, theres always Viagra......
