Nothing fancy other than a speaker changeout in a Peavey Classic 50 212. I removed the chassis to replace the speakers since everything is so very tight in that cabinet. Note that the Peavey Classic 50 does not have the 3 price folded circuit board that everyone seems to complain about. This model was made in the first of 2018. Speakers are Weber Blue Dog and Silver Bell. 8 ohm wired in series. Each speaker has 50 watt capability.