Hi, I need a bit power-amp advice...... I've decided recently to go Ampeg amp into my Ashdown 4x10 cab. As money is scarce at the moment, I thought it would be a good idea to get hold of a SVT-2P preamp and bypass the preamp in my existing 200W head. I had to do a bit of re-jigging to the existing head to do this as it has no effects loop..... Anyway, I'm getting a pretty lousy sound with this setup, to get more volume it seems I'm constantly overloading the poweramp so I figure I probably need to try and get hold of a dedicated poweramp. I've never gone down the seperate power+pre amp route so I'm not sure what I'm looking at... Does anyone have any suggestions on models/brands. I really need something cheap, and was thinking of Behringer....? Secondly, my cab can handle 600W, so is it better to get a matching 600W amp despite me never realistically needing to go that loud? Thanks!