Tube amp on the floor or on the rack?

If you put it on the floor you must get it up in the air. I had mono tube amps and the best thing I did was have a carpenter friend build me boxes filled with sand. Plus I then used Black Diamond cones to isolate the amps. Tubes need a stable platform.

Peter

I have my Audio Aero Captiole on the floor on an amp stand.Besides the fact it weighs almost 100 pounds,the air circulation is much better than if it were to sit in a rack. With it sitting in the open is dissapates heat much better.The down side,is it becomes more prone to dust.Time to buy an ionizer.

can your rack accomodate the vk-60 (~17"x24")? i've yet to find a non-custom "rack" large enough, although i have seen dedicated amp stands that worked well. also, the amp is pretty heavy for a top shelf. why are you opposed to having it on the floor?

another option: i have my vk-75 on the floor resting on BDR cones and pucks...allows adequate ventilation underneath and isolates the amp from vibrations.

You should have a shelf/sand box of some kind under it.

Get audio points and set the amp on those, and then put it on the floor. Try that then try just putting it on the ground, I don't notice a difference personally. FWIW I am friends with the owner/designer of a highly regarded tube amp company and he laughs at people who use spikes and such. His amps start at 30k and go up from there so I am sure he know a thing or two about what he is talking about. Just make sure you don't have it in a rack that doesn't allow the top of the amp to cool and heat what ever is above it, that would be a concern for me before the bottom cooling.

Tim
btw I have my VK-60 sitting on the floor between my speakers-nothing else between them. For the simple reason it looks cool and is very functional.