Problem with Arc 4150xxk and its rear amp

[spark plugs. 10+ year member]

That's probably not that bad dude (repair through Arc Audio) I am really backed up at the moment, got a lot of amps in the shop and getting married this Sat. So basically nothing is getting done at the shop till March 3rd.

yeah...the previous owner and i decided we're just gonna undo the transaction and move on. i've already got other prospects and i suspect (if he keeps the amp and finds the same problem) it will be coming to you anyway.