I've recently got a used Adcom GFA-555 in the earliest version like the one as shown in the picture here. It's an amp over 20 years old and I have no idea of its history. I'd like to check it electronically. Anyone kind enough to send the full service manual to me? Thanks in advance!
The amp sounds very good! Another excellent design by Nelson Pass.
The amp sounds very good! Another excellent design by Nelson Pass.
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