cleaning Mac amplifier?


I am looking to maintain a well cared for mc-250 amplifier. The chrome, paint, and print are currently in good condition. What products work well to prevent pitting while not harming the print?
Thank You for your help.
Guycom
guycom
I have 3 of these amps, one of which I bought new years ago. Use white vinegar with a soft cotton cloth. This cleans and shines and won't remove print or cause scratches.
I have used simple rubbing alcohol and a cotton cloth with good results. Make sure the cloth is 100 cotton since polyester blends can cause scratches.
Alcohol can remove the lettering.