This is the cleaner you want ! I wasn't sure when searching for a cleaner and am glad I choose this one. I have a 99 disk carousel that holds the disks vertically. I wasn't getting sound correctly from it. It's like sometimes the songs would play and you couldn't hear the lead or sometimes you wouldn't hear a rhythm that you knew is supposed to be there. Some CD's skipped. I ran this thru the cleaning cycle twice just to be sure and my cd player is like brand new !!! I used in my 6 disk factory installed cd player in my vehicle and also on my single disk player in my other car. They sound great too. Very happy with this purchase.