What to clean audio equipment with?

Do not use Windex or any ammonia based product on anodized metal as it can cause permanent discolorations. I have had good luck with Sparkle Anti-Static Ergonomic Screen Cleaner (non-abrasive and ammonia-free) on my anodized equipment. I spray it on a lint free cloth or preferrably a micro fiber applicator pad for auto detailing and lightly wipe in areas with lettering or lightly rub in other areas without lettering. I do not spray any products directly on equipment. In between cleanings, dust with a micro cloth, which can be purchased at most stores selling auto accessories.

A few years ago I bought a CJ preamp with a silver faceplate that was stained.
I called CJ and the service tech said that they used Cinch brand liquid cleaner which is available at the grocery store. Since then I have cleaned all my metal gear regularly and had no problems at all with any side effects.

I use Pledge and a very soft fiber towel for waxing a car. A little goes a long way. Doent harm silcsceening and works geat on chrome. You only need a little otherwise you end up wiping more than you need to for picking up the excess