For those of you that know this company, perhaps you can help. I'm looking on Ebay at one of these bad boys. The model is GFA-5400 and it's going for $200 with 6 hours left. From what I can gather, it's 200 Watts to 4 ohms. However, what I'm wondering is is that total, or per channel? Also, can all amps be bridged or only some? Can this one? I'm planning on using the Tempest driver (750watts at 4ohms running parellel), is this amp enough power? Thanx in advance for any answers and patience with stupid questions!