Exposed to tubes?

I have my first tube amp in my system, a BAT VK-60. I am finding that with my VR4jr's the amp only sounds slightly better than my old DNA-1, don't get me wrong it sounds better but not by as large a margin as I had expected. Am I crazy or was the DNA that good? I'm glad I have the BAT because it is an improvement overall but boy the DNA really held it's weight against the higher priced competition. The amp is a monster but beautiful to look at with the tubes glowing.

The problem I have is with the exposed tubes, we don't have children yet but we do have two curious huskies that love to "sniff" everything. I would like to find a cage for the exposed tubes that can be removed at will when the dogs are out of the room. I would also like to find a clear plexi-glass cover for the amp to control the fur & dust when the amp is not in use, I saw them advertised in Stereophile once but can find by who.