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Hard unless you buy it yourself. Personally with two channels you might be better off with the Yamaha a4 or whatever it is. Not A4A
Or try to dig up a demo or open box amp from an audio retailer. Sound united honors warranties on all open box and demo units from authorized retailers.
Also has a friend with tsr-700 from Costco and honestly that wasn’t a bad unit at all for stereo or full movie setup