Thanks Brauser for your sensible post. XLR against RCA is neither a matter of faith nor of simple specs and "science" generalised. The proof lies in the listening! At least that has been my experience too. An afterthought: Balanced power lines, be it through Equitechs or the PS Audio Power Plants, I personally found a true revelation in the general lowering of the noise floor. Got nothing to do with the topic of this thread, was just thinking about "balanced".
RCA vs XLR
I was told by a dealer that RCA connections will tend to sound more 3 dimensional that XLR. Currently I am running everything balanced. Does anyone have an opinion and have you experimented with both formats?