Check the listing for details. Listen Technologies LR-3200 Intelligent DSP RF Receiver - 72MHz. Condition: New. Listed at 145.80 USD. Affordable, Compact Reciever with Exceptional Audio Quality The Listen Technologies LR-3200-072 receiver delivers superior sound quality in a small, lightweight unit that’s comfortable for listeners and easy to store. With a broad range and strong reception, the LR-3200-72 is ideal for numerous situations that require a listening device, including conferences, worship services, classrooms, and tours. The LR-3200-072 comes equipped with a money-saving rechargeable Lithium-ion battery, so the unit has enough power to stay active during long presentations. Flexible charging options include charging over micro-USB for single units, or bulk charging of multiple units with an optional Listen Technologies charging tray or charging case.