Looking for a 1 or 3 channel amp. Needs to be stable at 4 ohms. I plan on buying an emotiva UPA-1 for $350 with free shipping. I thought I'd check on here before I did, but I don't want to spend much more than what the emotiva costs. I can increase my budget for a 3 channel amp, but I'm really just looking for something to power my center channel.