Quote:
Originally Posted by vcoheda 
i have always been interested in these contact enhancers and have read good things about them, but i have also read that they leave - or can leave - a permanent residue on the plug. that made me less interested.
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I have used a couple of enhancers. Progold seems to be the safest. I find it makes the system a bit treblish for the first day or so but then settles in to a generally good clear sound. I used this for years and can't say it seemed to cause any problems. You are going to want to reapply it once a year or more often though. But then if you didn't use any enhancer you might want to clean things that often. I believe it contains contact cleaner as well.
More recently I have beed using Silclear a silver-based enhancer on ic's and power cords. So far so good after about 6 months. But it definitely leaves its mark on the contacts, hopefully silver. So far it does great things to the sound, signal levels up, more punch, bass and prat. You need to try to use very small amounts, because it does get flaked off and then into places you where you don't want it.
The biggest disaster was the original Tweak, a contact enhancer which was especially good at boosting bass. After many months it turned to goo on your contacts, screwed up the sound and was a real hassle to get off.
So I can understand being cautious about these things.