Perfect. I restored a vintage Sansui AU-D33 amplifier that had a problem, and I was ready to take it for service. At some point, of course, it will go for a complete cleaning by a professional. When you turned up the volume or when you selected to play a different device like CD, TUNER, PHONO, or AUX, THE SOUND WOULD DISAPPEAR FROM THE SPEAKERS and you would only hear one or the other alternately, and you would hear crackling sounds - CRACKLING NOISES. NOW EVERYTHING IS GREAT.

Amazing product. I use it for contacts and potentiometers in vintage audio systems. It does its job perfectly. The oil it contains makes it suitable for potentiometers.

Excellent for cleaning electronic contacts. I bought it to clean the volume switch (round potentiometer) on my Nissan factory audio system. It did the job I bought it for! Worth it.