hi all, I have been looking over specs on these little t-amps for a while now, and have narrowed it down to these two. http://www.parts-express.com/topping-tp60-t-amp-tripath-ta2022-50wpc-(80wpc-4-ohm)-mini-amplifier--310-326#sthash.X7c03aZZ.dpuf http://www.parts-express.com/smsl-q5-2x50w-amplifier-dac-with-optical-coaxial-usb-version-2--230-208 Sound quality is most important to, along with reliability. My system will consist of an iMac, Audioengine P4 speakers, and a Dayton 8" powered sub. The room is only 12 X 14. Thanks!