Anton Bauer QR WRB 25
Wireless receiver box fits between Gold Mount battery and camera to accept any 25-pin insert style wireless receivers, such as Sennheiser #EK-3241, EK-3041, Ramsa #WX-RM770, TSP #WD-900R. Adds only 1 inch to camera length and powers receiver from camera battery. Standard 3-pin audio out connector.