I had to acknowledge the excellent sound coming from my ICE MC amp by Wyred. The sound is the best I have had to date and I am coming from a DK Design Reference MK2 previously. I have 500's for the fronts, 250 for the center and 4 x 100 for the surrounds. The amp is integrated into a two channel and HT system. When I first got the amp I was using my Sherwood receiver as my only preamp. It sounded great. Clear, great bass, dead silent in the backgrounds. I really enjoyed listening to it. But I knew it was missing what I long for. Fullness, palapility. I knew I needed tubes. My source is an Apple TV. I love this thing. I have all my music collection ripped to Apple Lossless and then transfered to the Apple. Turn the computer off and you have a music server that has a great interface and screensaver. Of course, you need to use the Toslink digital out to get high quality. Anyways, the receiver, used as a preamp, with the ICE amp is great! Excellent dynamics, clear, natural. But with pure two channel I knew I needed a different preamp. I bought a TADAC from Tube Audio design. It is a tube dac that can be used as a preamp. With the front channels of my Wyred amp the sound is incredible. Wow! Smooth, clear, deep sound stage. The singers are much more there. Everything sounds much more live. The combo is a huge upgrade over the DK. I recommended the TADAC to my friend and he loves it, and I will definitely recommend the Wyred amps as the best by far bang for the buck. Not cheap, but you can't get an amp that sounds this good for budget bucks. In case you are wondering how to integrate two preamps with one amp, my solution was to run my HT preamp LR and my TADAC into a Niles PS-1 switcher and then to the ICE MC front channels. No HT bypass on the TADAC.