Bittree B96DC-FNRSS/D25 S2OU12B Internally Selectable TT (Bantam) 968s Series Audio Patchbay in 1RU High-density 2x48 jack configuration with stereo jack spacing (jacks grouped in pairs). Patchbays with switched grounds feature an additional switching contact in every jack. Grounds are lifted when patching, ensuring a proper grounding scheme is maintained, and ground loops, or earth loops, are avoided.