I am growing so tired of my 6534+ so I put it up for sale. Someone offered me 900$ which is pretty decent and was thinking of buying a jcm900 dual reverb (4100). I am just worried the jcm wont have enough gain for death metal? or be able to handle semi low tunings. I will be playing D standard most of the time but sometimes will whip out my 7 string. I have a couple boost pedals to tighten things up but is that enough?