Neutrik Balanced Patch Bay NYS-SPP-L-1 48-Point 1/4" Trs Balanced Patch BayThe Neutrik Modular 48 Point 1 4" TRS Balanced Patch Bay is a single unit 19" rack mountable patch bay in a reinforced metal housing. The patch bay has 48 PCB channels in 24 front pairs and 24 rear pairs. Each pair can be grounded separately or in groups according to your preference by simply attaching the supplied grounding clips to the grounding pad of the corresponding channel. The PCBs are clamped without bolts or nuts between the front and back