Re: Fender bassbreaker 15 for Metal?
The Bassbreaker 15 can do metal, especially on its high gain setting.
That isn't its forte, though, IMO. I believe its best setting is medium gain, which would get you up to hard rock. The Bassbreaker 15 medium gain setting has some of the best old Marshall-flavored tones out there today. I'm pretty sure you could get up to metal by hitting the medium gain setting with overdrive, and especially if you have high output pickups.
In my experience, the high gain setting, while sounding good, can get noisy. A noise gate in the effects loop might solve that, though the effects loop in the 15 has had noise issues of its own (known issue shortly after introduction, maybe solved in later production runs).
I would try it in a store, since it's a commonly available amp. IMO, the Bassbreaker amp was conceived as a rock/hard rock amp. The Fender Super Sonic is more of a high gain amp.
At similar price points, I would also consider these heads: Blackstar HT 20, Marshall DSL15, and Peavey ValveKing MH or 6505 MH. The 6505 MH might fit your bill, especially if you need a ton of gain. Its Rhythm channel is basically hard rock, and its Lead channel is basically Cannibal Corpse
