"I would also add in the email, the emails between you and the manufacture.... I bet the buyer will understand and be happy." (Jea48)
I bet there's almost no chance that "the buyer will understand and be happy." What's making him happy, is causing this bizarre stink over almost nothing. It sounds like he's trying to "teach the seller a lesson", & his pompous manner.....maybe he's clinically narcissistic? Has he listened to the amps? It doesn't sound like he even cares about the amps, only the manual.
Jaxwired, it sounds like these were expensive amps? You maybe didn't talk to the buyer by phone before the sale?? I once turned down a sale of a $1K TT to some pompous Yuppie type after talking to him on the phone. He was very suspicious, kind of insinuating--w/in the first couple of minutes--that I was some kind of scam artist (??) (even tho he had 0 FB, & I had a lot of great FB), demanding that I bring it over to his place & set it up for him, on & on. And I bet he would have found some tiny thing to make a stink about after the sale, even tho the TT was perfect.
It's all about "me me me me me me me" for those types.....& I think "proving" how superior they are.....I bet all this makes this buyer feel "powerful".....& that he's feeling very, very pleased with himself right now.....