This little amp is a Jewel. Just the way is looks. Thick front faceplate, rounded heatsinks, compact. On the inside, everything is shielded and very clean. You can tell this guy LOVES building amplifiers just by how it is constructed. I have heard the Model 2,6 and 8 are his best amps ever and are considered some of the best of all time. His class D gaining respect but I am old school when it comes to amp design. Colorado putting out some INSANE audio equipment. Jeff Rowland, PS AUDIO, AYRE, BOULDER, WILSON, AVALON, ETC