one that has been washed regularly, with an organic soap /cleanser, and occasionally rubbed gently with a dead sea mineral/ sea salt solution, helps electrical connectivity. Then finished with a high quality paste wax, like Mothers or Griot’s Garage Premium Carnauba Paste Wax.
Under normal usage that should keep your amp clean and looking and sounding it's best for months at a time.
Under normal usage that should keep your amp clean and looking and sounding it's best for months at a time.