How To Keep Cat Off Stereo Equipment?

All of my tube gear is located in a closed hall closet located behind the speaker wall (speaker wire runs through the wall to the living room).

If this is not option then look into a closed/doored ventilated cabinet/rack.

If a cat PP's on a live tube amp it could be toast for both.

I once picked up an old pie safe to use in the spare bedroom (tube gear), but ended up using SS gear instead.

Stray and rescue cats are the best.

DeKay

C'mon, 

You KNOW the answer! 

With my cats 🐈 every time they go behind,or on my equipment I have a Air horn I blow 6 ft away  after a few times they got the hint !!

Cats don’t like certain scents, especially citrus such as lemon (and some other scents like peppermint you can look them up). Keep some fresh cut lemons in a glass or maybe a peppermint plant near your equipment.

I’ve got three cats and they never bother my stereo equipment - they have window perches to sit and enjoy instead, looking at birds and squirrels which is kind of like "Cat TV", however a friend of mine had some young kittens that wanted to use his speaker grilles as a scratching post (he was dumb and hadn’t provided them a real scratching post and some training on using it). He ended up using some black painted chicken wire on some homemade wooden frames and place them in front of the speakers. That worked fine.

Cats are of course curious creatures and if they see movement, such as a turntable, they will be drawn to it and want to see what you are doing. Provide them with other entertaining activities and they’ll soon leave it alone. Good luck.