Adcom GFA-5500 Musical Concept Mods


Anyone ever heard this amp with these mods? I've got a 5500 that's at least 15 years old and sounding tired. I'm trying to decide whether to have it modded/updated/serviced or replace it with something more current. The reliability of this amp has been bulletproof but it's sounding a bit bloated and harsh lately so I need to do something.
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Klipsch KLF-20's with Crites titanium diaphragms in the tweets, Klipsch titanium diaphragms in the mids, and Crites custom crossovers with a band pass for the mid horn. Marantz AV-7005 prepro.