KONTAK CLEANER

" Easy to use, simply apply and allow to dry. Once Kontak has been applied, contact resistance between the connectors drops to virtually nothing, enhancing signal flow and conductivity."

https://www.musicdirect.com/equipment/kontak-contact-cleaner-aluminum-bottle

"  Also can i use it to clean my electric posts on my amp , preamp and cdp?"

isnt that what you bought it for ???

"  BTW, what do you clean with it? "

I use it on my speaker cables on both ends.....and also on my IC's,

@ tattooedtrackman

"  Thanks....I didnt even think of the electric posts on my amp ,preamp and cdp until it came. I was just thinking about my speaker cable spades and power cable plug ends. I guess you can use it on any metal connections. "

I would do one thing and then give it a few days before adding it to other connections.     that way if there is a change that is not good, you will know what piece you did.

"What about your electric posts on you amp pre and cdp and power cords?

I only did the speaker posts on the amp / speakers.....and the inputs/outputs on the preamp / phono preamp.              didnt do anything power related.....