...is without a doubt the Fender Twin Reverb. I remember when I was a 16 year old kid who had only ever messed around with small amps, I got the chance to play a silverface Twin at a friend's house. Amp volume was on 2 the whole time, and I couldn't believe the cinemascope sound I was hearing. Deep, clear, huge soundstage. Made a Strat sound so good. Fast forward a few decades and a hundred amps and nothing has changed. If I want to just enjoy a Fender guitar the way Leo intended, there is nothing that beats a Twin Reverb. It's such a joy to play. Doesn't matter what it is, blackface, silverface, they all kill. I was without a Twin for some years and just recently picked up another one. Won't be without one again, that's for sure. The fact that this masterpiece of a tube guitar amp sells for one third of what a blackface Princeton Reverb sells for is a complete joke and a great opportunity. I have both, the Princeton sounds like a toy next to it, at the same low volume. Every guitar player should have a Twin Reverb, even if they never turn it up past 3.