Great customer service, fixed my HK receiver - authorized dealer. They actually told me to place the receiver in their work queue and see if it was still under warranty; if it was, they would help me with shipping it to HK; if it wasn't under warranty they would then do the work. Instead of just charging me to fix, they gave me options.
They are one of the only stereo repair places I know of, so be prepared to potentially wait a while (you can pay more for rush fixes).
Pros: Fast, friendly, honest service, easy to find
Cons: Weird hours
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