4 months old, purchased from local dealer. In perfect condition. These are terrific amps but I didn't find them to be a good match for my Magico S1s, especially with my Exogal Comet Plus front end. I decided to go an all-tube route instead, hence the sale. I have been a long time fan of Bel Canto - they make superbly engineered, highly musical products and these monoblocks are no exception. In a recent review, Australian HiFi concluded "...I think this may be the best performing Class-D amplifier I have ever seen..." Any questions, don't hesitate to ask. Low-ballers will be ignored.