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Title: HK = Hums Konstantly
Review: I purchased my HK AVR45 in July. It sounded great except for the hum. Went through all of their suggestions, it was in the shop for almost two months waiting for parts. But the parts did no good. I worked with HK customer relations people and they were great. They are replacing my unit with the brand new AVR500 model. Hopefully it will not hum. If you are having trouble with your unit contact them by phone or e-mail.
