I need a 2 or 4 channel amplifier with an emphasis on sound quality. SQ is really important for me. Currently I have an Xtant A404T and I'm not too happy with the sound quality compared to the PPI P275 I used to own (wish I hadn't sold them). The amplifier needs to be able to output at least 100Wx2 at 4 ohms for my front Image Dynamics CX64 components. Thanks!