Well I sent a Nad C165BEE for a repair which I originally purchased from these Ametuers a few years ago cut the long story out I know it's the cheap Chinese Capacitors NAD used which I have replaced all them now and the amplifier sounds crisp and nice now no thanks to these clowns!!!! 1: They found no fault (which can be heard clearly even with headphones on). 2: When they called me to say no fault was found I replied put a Oscillscope on it they replied we don't use those! (What on earth and you Muppets call yourself a service centre!!! 3: After no repair they sent it back to the Caversham so I could collect it (guess what they've left a loose Capacitor rattling around with must of came out someone else's working unit now it probably don't work lol 🤣 4: I received it back second time now and it looks like they've sprayed some solvent on the front panel (which clearly wasn't there before I sent it off to be repaired. Be warned!!! These guys are a bunch of Ametuers.