I had a BV-120 (second generation) head and it could do metal. I had a cable running from the FX send to the return to give it an internal boost (can be done with any head). It won't get a super saturated Engl/Boogie tone though, but it is definitely capable of decent metal tones. Only problem is Crate boards are absolute junk. Very brittle and prone to problems, which sucks because I actually like the BVs.