Bryston, a Canadian company, has a repair facility in Vermont. When I stupidly blew up the output transistors on my old 4B-ST due to a speaker wiring short, I sent the amp out to them on a Monday and received it back on Thursday of the same week - no charge. Bryston has the best customer service of any audio manufacture I've experienced, so prospective buyers should not avoid them because of their Canadian location.
Alan
Alan