The thump occurs no mater what I turn off first or last, there are only fuses no switches. I'm certain it has nothing to do with the Merlin, other than they make beautiful music together. I think it's like Mark says, that's the way those old amps run. My concern is damage to the speakers. I first ran the HK through a pair of NHT Three's and had a similar problem, but not to the extreme as the Forte's. Mark, is there any recourse? Is there anything wrong with letting it sit there and idle? Shorten it's life?
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