yping, the gold product is not really a cleaner, I've tried it too. After applying it within a few months I had a little bit of green residue I wiped off the RCA jacks of my preamp. I haven't used it since.
But the Deoxit D100 or D5 is actually a pretty good cleaner of contact points. That said, I ordered some Stabilant-22. I did notice an improvement of the sound, more detail. I applied it to all of my RCA connections but not my speaker cable connections. Unfortunately I've been changing cables a lot and I think I've reduced the effects. Once I settle on a cable combination I'll reapply.
But the Deoxit D100 or D5 is actually a pretty good cleaner of contact points. That said, I ordered some Stabilant-22. I did notice an improvement of the sound, more detail. I applied it to all of my RCA connections but not my speaker cable connections. Unfortunately I've been changing cables a lot and I think I've reduced the effects. Once I settle on a cable combination I'll reapply.