more modern tube amps that are a steal and sound great for rock:
any laney AOR series head, there's also a 30 watt combo, ugly amps, but real sleepers... cheap but amazing, like hot-rodded marshalls... I prefer the ones with elss knobs. YMMV though
some laney GH series amps, I like the GH50L, its 99% a jcm800, don't pay mroe than $600 for a head...
trace elliott tube amps, the 30 watt one is a real sleeper, ac30 style amp, should cost $500 or less... I would try for less... haggle
this dude on here recommends the Crate club series amps, there's a thread we were talking about them on. Apparently you want the first one, not the later one that rbeaks down, but this odler version that's more marshalls than voxy. I'm just apssing this along, I've enver had any luck with Crate amps. They sound okay but they all break! Except for this one apparently... not sure how easy the good club amp is to find though
Gibson goldtone amps from the 90s, trace elliott amps in gibson clothing... I like the trace amps ebtter, but the gibsons are okay too... the 50 watt head is rpetty sweet actually but its not worth anything on the used amrket. Try tog et it for $300
jet city amps, shockingly good sounds and build quality for a chinese PCB amp. Reasonable prices new, trade used for peanuts. No brainer. They amde a 50 watt combo for a while that's really unknown. its amazing, based on soldano's awesome lucky 13 amp. $400 limit on the heads, a combo is worth considerably more, they have nicely made cabs and high quality speakers stock
I hate to say it but the peavey classic 30 and classic 50 are a steal, real workhorse tube amps. THey lack character but can do a little of everything. They're often very cheap. I would enver pay more than $400 for anything amde by peavey.
you run into this shit all the time if you keep your eyes open. There are cheap, quality tube amps all around you if you open your eyes. If this dude is thinking of spending $400+ on a hybrid amp? he should raise the money bar a few hundred and get a full tube amp.