Do connection/contact solutions work or not?

the right ones like pro gold work, they keep the sound from degrading not improving it.
Larry

I like kontak. It does improve the sound-sometimes its not so subtle. If you have tubes, apply it to the pins and sockets. (With the power off!)

Works with all signal and speaker cables.

I would agree with Larry. The purpose is to remove and/or prevent oxidation. If the contact is already clean, it doesn't "improve" sound; rather it prevents it from deteriorating. If the contact is dirty, it "improves" the contact in the sense that it restores it to a clean state.

Thanks for the good answers. Preventative maintenance is always good.

I use a product called STABILANT 22A; which is an electrical contact enhancer. It has been around for a long time and is used heavily in the electronics industry. I own a 20 year old media duplication and media editing company; and have used it extensively in our three studios. Works great and dosen't leave a film or get sticky. Also used in my mostly McIntosh and JM Lab audio systems at home too.