I've been playing the bass religiously for the past few months and I'm wanting to upgrade my amp, as I've been playing off some cheap starter practice amp. I found a used GK MB115 combo amp online, for only 220 bucks (which I thought was a steal), but turns out the speaker was blown out. So now I'm in the market of another used amp for around 2-3 hundred dollars, and as I don't know much about this sort of thing, I thought I'd turn to you guys for help. Any suggestions? P.S. The amp needs to be around 200-300 dollars used (not new). P.P.S. A little out of price range is fine.