I don't think they ever had good customer service, notorious for not answering phones and very slow replies to emails. The "good" amps that got them started were the same boards Sundown was using in a gold heatsink. Guess they got burned with a bad "12K" amp and are going to lose their arse.
I heard from EXO that something fishy was going on with those big amps about a year and a half ago but didn't catch the whole story.
Again, if Sundown got a bad batch of boards they could use their buying quantities to bully the buildhouse into making it right and they have enough cash flow to eat a dud product worst case scenario. The "value" brands have neither and you get Diablo 2500 or RD 3250v2 fiascos that put them out of business and leave consumers holding the bag.