Hi, I own an ampeg SVP-BSP and I cant get a fat, clear distortion from it. When I use the overdrive channel I loose the bottom end. I have to combine the 2 channels to get any botton end at all, but even doing that its not the tone Im looking for. Im looking for a tone like Tom Araya from SLAYER especially the sound he gets on Deaths Head" or the cover "I'm Gonna Be Your God". Any opnions or sugestions on the settings of the Ampeg preamp? Overdrive, fuzz or distortion, what is the diference? The SVP-BSP has a overdrive, fuzz or distortion tone? Thanks.