i hv 4 cats.
they will sleep on my power amp as very warm (just use thin cloth to cover the air hole to prevent the hair drop into the amp)
they will sleep on my CDP (just use cloth to cover the cdp)
they will jump on top of my floor stand speakers.(put the doll on the speaker)
they will walk at the back of hifi rack( no harm)
they will sit on the hi fi rack(no harm)
they will scratch the speaker net.(use fabric cover the speaker when not using it)