Which one has more effect on the overall tonal balance. Can this be corrected with EQ or is it more. I've been using a Alembic pre-amp for the last 6 years and I've used several different power-amps with it. It always seems to sound pretty much the same to me no matter which power amp I use. I must admit however, that the power amps I've used have been Solid State Analog PA type deals. I haven't used a Power Amp specifically designed for bass or an all tube power amp so my opinion is lacking somewhat in practical experience. What has been your experience?