I'm upgrading my rig from a beringer 300w ultra bass combo (which I have found to be awfully underpowered) to a new set up. There is a used hartke xl 400w at 8 ohms 4x10 cabinet at a local pawn shop that's only $150 that seems to be in good condition besides being dirty and a little used that picking up tomorrow. Now I need you guys give me opinions and advice (links are always appreciated as well) on a the best head for the best price that will push as close to the 400w as possible to pair with it. I'm trying to spend under $350 so used is the way I'll most likely be going. I play in a 4 piece rock/alt rock/somewhat experimental band so I need something strong that's going to push me through the mix. Thank you so much for any help you can offer.