So sounds like these are pretty new (2010 version), not sure if anyone owns these yet. They're going for 160 on sonicelectronix. But if anyones owned the previous versions or other MB Quart a/b REF amps can u tell me how it was with SQ and power? Or if you have a better recommendation, I need something that can at least do 150-200 at least 2 channels @4ohm. It will be running a set of Image Dynamics CTX65CS. Gracias!