How do I keep my cats off my amplifier?

I have 4 cats myself and a Class A amp so I know the problem. Real easy. Put something on top of the amp when its not in use. Artificial plants or some decorations should do. Something that easy to take off when the amps in use. Just put it back on when your finished listening.

Cats always look before they jump on top of something. If there's something in the way and no where to land they won't try to jump on it.

Ok, I see by reading your post again, your cats are real stubborn jumping on the amp when its in use. You still may be able to find some pattern of putting decorations at the edges of the amps that still allow the vent to be unobstructed. If the top of the amp is above kitty eye level they probably won't try to jump on it believing theres no where to land.

If that fails just let the cats have their way and find some type of nylon mesh that will allow the amp to vent but keep the cat hair out.

If it is a traditional box you can set a couple of mouse traps on top. the trick is set them upside down so when the cat jumps up on top of the amp they go off but they don't get caught in them. It should to the trick!

Try urinating on the amp, avoiding the electronics, of course. The cats won't dare usurp the alpha.

Gunbei, I love your maceball and porcupine heatsink idea.

Anyone ever try a switcth to lift the ground on their amplifier to keep the cats off?