Just curious. I picked up a 1968 Silverface Super REverb. It has a "cap" in it for the Tube rectifier. I'm going to pull the rectifier from my 59 bassman and do a comparison. Just curious as to what most people thing. I personally think I'll like the tube rectifer. My Budda SD45 has the ability to do both and I prefer the feel of "digging in" a bit with the Tube. But....its not a huge difference.