Stage 412 is a four‑channel VHF wireless system consisting of four Q6 dynamic handheld transmitters and a rugged SR412 receiver. It operates from 173–198 MHz with six selectable frequencies per channel and IR sync to match transmitters. The system provides a 200 ft (60 m) line‑of‑sight range, and each handheld delivers up to 10 hours of battery life on two AA cells. The SR412 offers four 1/4" outputs plus three balanced XLR mixed outputs. An AC adapter is included.