I primarily run a VAC PA 35.35, an EL 34 push-pull amp. Sometimes, I switch to a Plinius SA 100 MKIII, 100wpc solid-state, depending on what I'm listening to at the time. I don't feel the need to change cartridge loading when I change amps. The Plinius has better bottom end, and is better for very dynamic material.
Best,
Dan
Best,
Dan