On the XLR adaptors ..... running my 20ft Sonoran RCA ICs to my Ultra Cherry works fine without the ground extensions, I simply just use the RCA to XLR ends. My Audio Mirror tube preamp didn't prefer using the ground lift end, producing terrible noise. I guess some experimentation the key, nice to have the grounding options thou, who else in this business offers this kind of forethought ???
Will be full balanced once my TL-DAC DAC arrives turning to my Classe CP-35 mkII preamp.
DW