I bought a Jet City 50-watt head several years ago and was never thrilled with it. I replaced the grid resistors in the power amp and modded it to take EL34's, which helped a lot but didn't get me where I wanted to be. Then I went all in and modded the preamp to JCM800 specs. Sounds really great, but needs a lot of volume to do it, and the lead channel is way too compressed and flubby sounding, so I never use it. Still pretty nice to get a 2204 for less than $400, though.