RTS BP-325 Beltpack

The BP-325 is a two-channel analog partyline beltpack — the piece of kit that puts a stage manager, fly rail op, or lighting board op on the comms ring without asking them to think about it. Clip it on, plug in a 4-pin XLR headset, and they're talking. The two independent channels are the real point here: one pack can simultaneously hold a place on both the audio world and the lighting world, so an SM running a complex show isn't fumbling between two beltpacks or calling blind. At $549 it sits firmly in the professional tier, and it's priced that way because touring and theatrical environments depend on it nightly.

Power comes off the partyline itself — from a main station like an RTS BTR-800 or a compatible Telex MCS-325 — so the beltpack draws nothing of its own and there's no battery to manage mid-show. The loop-thru XLR pairs on each channel let you daisy-chain multiple packs on a single run of partyline cable without breaking the circuit, which is how you build a twenty-position comms network off a single cable home run. At 400 grams and 60mm deep, it's genuinely comfortable on a belt for a four-hour load-in. The 4-pin XLR headset connector is the RTS/Telex standard, so headset inventory from either brand drops straight in.

If your production runs RTS or Telex analog partyline and you need crew members on more than one channel simultaneously, the BP-325 is the right call — it's built for exactly that environment and will work reliably in the hands of non-audio crew who don't want to learn gear. If your comms infrastructure is already digital — Clear-Com FreeSpeak, Riedel Bolero, or similar — this pack won't bridge over; you need beltpacks native to that ecosystem. And if you only need single-channel partyline, a less expensive pack might free up budget elsewhere. But for mixed theatrical and touring rigs running analog partyline, this is the industry-standard answer.