I have no doubt that some people may hear improvements in their systems Stan, but I would be interested if you could point me to a single technical paper which supplies solid proof that biwiring provides any audible gains, as in measurable. You aren't star-earthing, you're doing the exact opposite by splitting the ground return between the different drivers, unless I've missed the point you were trying to make? I would also seriously question any audible benefits at the voltages in question because even with commoned ground returns, the difference between splitting the grounds and using a common ground would account for less than audible (possibly less than one quarter of one dB in cross-talk) differences. I have looked hard for any discernible benefits and have found none. I'm not the only loudspeaker designer who thinks this way either. That in itself is not concrete proof of anything, but just as you find some of these comments "funny", I reasonably question the technical merits which are often espouced without a single shred of evidence to back them up. I remain fully open minded though and genuinely would be appreciative if you could in fact show me the error of my ways!