Hmmm...I wouldn´t go for Josh advise(The V-Twin). It´s maybee heavy or so, but there is not much distortion in that preamp pedal.
I use the Caliber 50 (a Mesa/Boogie poweramp) to get a heavy sound. (I love this amp!!!). If you want a more heavy/deathish sound buy a Rectifier amp from Mesa/Boogie.

[This message has been edited by Johan (edited 08-27-2000).]