#2
The SVT-3 PRO has a number of preamp tubes, whereas the SVT-450 does not. Beyond that, they are not too dissimilar. The SVT-450 is a solid-state amp designed to look just like the SVT Classic. It has a nice tone, but it is not as loud as I thought it would be.
"Maybe this world is another planet's hell?" - Aldous Huxley