Sold here in a two-pack, the Sound Devices XL-MCX to SMA is a connector cable for the company's SL-2 Dual SuperSlot Receivers for 8-Series recorders. Each cable offers two right-angle MCX plugs on one end, and two right-angle SMA plugs on the other end. You can use each cable to connect an additional, SMA-terminated receiver or SMA-terminated RF distribution system to the SL-2's MCX Aux Antenna A or B port. These are 50-ohm cables, each measuring 22.7" in length.