I have a Classe Model DR-4 that I purchased new around 8 years ago and had it upgraded to a model 4 around 6 years ago. I had a tube preamp before that and I have been very satisfied with the sound of the Classe. It is built like a tank and all of the switches and features have worked flawlessly to date. It drives 20ft interconnects with no problem. The only problem I have had has been a ground loop hum that was easily solved with a cheater plug.
