Thank you guys for the responses. Its quite an exciting time at the moment for me as I have decided to turn one of the larger bedrooms into a dedicated listening room. Not ideal from the point of view that the floor is not solid but I will now have the space to set up 3 sets of speakers and have all my amps connected up. When I get it all arranged I'll post a few pics. I don't listen at high volume and I hope to have the racks well isolated so I shouldn't be plagued with feedback through the turntables.