The BT-PWR D-Tap to 2-Pin LEMO Power Cable from Beachtek is an 18" cable for connecting a V-mount or Gold mount battery to a Beachtek DXA-ALEXA preamplifier or a DXA-CINE audio adapter (sold separately). The 18" cable has a D-Tap on one end and a 2-Pin LEMO connector on the other.