OK, those of you who own a Richter 5E3 know how incredible it is. Simply the best sounding amp I've ever owned. OK, that's nothing new. But I would just like to tell everyone about the great experience I had with Sara & Gene Richter. After a few months, my 5E3 began making noises that at first go around sounded like a bad tube. After going through that line of thinking without success, they promptly told me to send that amp back and they would take care of it. Well, that is exactly what they did and the amp is flawless. I guess it was a faulty component deep within the assembly that took some time to find. I never had trouble reaching them, they were an absolute pleasure to talk to when I did, and they made me feel smart for purshasing a product from them. This problem aside, I think you all know that this was a fluke that it happened considering the repoutation and reliability record of this circuit. Anyway, super happy customer here, and Richter amps are my only choice of amp, period!