Yes, I have to run adapters to the BAT. I am waiting for my new pre-amp (Audible L2) but that will be single ended as well so I either have to continue use of the adapters or find some cables for RCA to XLR. I still don't think this will be as effective as fully balanced but it is all I can do unless I buy a different pre-amp.
The JR's are incredible, I have never heard any VSA speakers before these & (obviously) bought them sight unseen but it was worth it. They have incredible dynamic range while remaining fairly nuetral. Overall they are the best of all the speakers I have had so far (2Ci sigs, HR Kestrals & Tyler reference monitors) The VSA's are as close to a live experience as I have found yet in audio.
I have thought of fabric covers for dust protection but the tubes remain hot for sometime after use. A plexi dust cover & a steel mesh are the best fixes for my situation.