Shure P9RA+ Bodypack Receiver
Shure·Model P9RA+·shure-psm900-p9ra
Photos
Manufacturer product photography — the drawn faceplate above stays true to panel layout; these show the hardware itself.
About the Shure P9RA+
The P9RA is the diversityA receiver with two antennas and two radio sections that continuously picks the stronger one — the difference between a dropout and a show. bodypack receiver paired with the PSM900 transmitter. It uses Shure's Audio Reference CompandingCOMpressing-exPANDing: analog wireless squeezes audio’s dynamics to fit the radio link, then mirrors them back out. Done badly, it breathes. to deliver 24-bit-quality audio over an analog wireless link, and the dual-antenna diversity design helps maintain a stable signal as the performer moves around the stage. One per performer on a PSM900 system.
The P9RA+ is the performer's end of a PSM900 wireless IEMIn-Ear Monitor — earpieces that replace floor wedges, feeding each player their own mix. The reason this whole rack exists. system — it lives on the body, not in the rack, which is exactly why it appears here as a BOM line item rather than a rack unitThe standard slice of rack height: 1U = 1.75″. A 3U box takes three slices; half-rack gear pairs two units side by side in one.. Every PSM900 transmitter you're running needs a corresponding P9RA+ for each performer receiving that mix. It's a diversityA receiver with two antennas and two radio sections that continuously picks the stronger one — the difference between a dropout and a show. bodypack, meaning it carries dual antennas to maintain a clean signal lock as performers move across a stage, crouch behind a drum kit, or wander into the wings. The 3.5mm TRSTip-Ring-Sleeve — a 1/4″ jack with three contacts carrying a balanced signal or a stereo pair. A guitar plug with one extra ring. output feeds whatever earphones the performer prefers.
Shure's Audio Reference CompandingCOMpressing-exPANDing: analog wireless squeezes audio’s dynamics to fit the radio link, then mirrors them back out. Done badly, it breathes. is the key spec to understand here. It's a proprietary encode-decode scheme that lets the PSM900 system approach 24-bit audio quality over an analog RFRadio Frequency — the wireless part of wireless. RF planning is why big rigs scan, coordinate, and combine antennas instead of hoping. link — in practice, that means the dynamic rangeThe span between a device’s noise floor and its clipping point — the room between the quietest and loudest sounds it can pass. and high-frequency detail that in-ear performers actually notice when they're trying to hear a snare crack or a vocal breath. At load-in, the bodypack pairs quickly with a PSM900 transmitter via the front-panel scan-and-sync workflow. Battery life on two AA cells is rated generously enough for a full festival day with headroomThe margin between your normal level and where things clip — headroom is what absorbs the snare hit you didn’t see coming., but you should still establish a battery swap protocol for back-to-back shows.
If your system is PSM900, this is the only bodypack that belongs with it — there's no cross-compatibility shortcut worth chasing. If you're building a new IEMIn-Ear Monitor — earpieces that replace floor wedges, feeding each player their own mix. The reason this whole rack exists. rig and the PSM900 price point is a stretch, the PSM300 ecosystem uses a different bodypack and a different transmitter, so plan the whole system together rather than mixing tiers. The P9RA+ makes most sense for touring or residency situations where performers demand low-latencyThe delay between sound entering and leaving a digital system. IEM rigs fight to keep the whole chain down to a few milliseconds., high-fidelity monitoring and RFRadio Frequency — the wireless part of wireless. RF planning is why big rigs scan, coordinate, and combine antennas instead of hoping. stability in a congested spectrum environment. For a fly dateA gig you fly to instead of driving — the whole rig has to shrink into checkable cases and carry-ons. with a tight kit list, the weight and cost are harder to justify than in a full production carry.
In the rack
- Log every P9RA+ unit's serial number against the performer it's assigned to — swapping bodypacks mid-tour without re-pairing to the correct transmitter channel is a common and avoidable show-day headache.
- Store bodypacks with batteries removed during transit; even low-drain discharge over a long truck run adds up across a rack season and accelerates battery compartment corrosion.
- When building your BOM in IEMIn-Ear Monitor — earpieces that replace floor wedges, feeding each player their own mix. The reason this whole rack exists. Rig, add one P9RA+ line item per performer per PSM900 transmitter — the rack plan won't account for body-worn units automatically, but the cost and quantity need to be visible for accurate budgeting.
- Establish a consistent belt-pack placement and antenna orientation for each performer during soundcheck; body-worn antenna position affects diversityA receiver with two antennas and two radio sections that continuously picks the stronger one — the difference between a dropout and a show. performance more than most engineers expect, and repeatable placement means repeatable RFRadio Frequency — the wireless part of wireless. RF planning is why big rigs scan, coordinate, and combine antennas instead of hoping. behavior night to night.
Bodypack receiver for the PSM900 system. Not rack-mounted — listed for BOM.
I/O Ports (1)
| Port | Connector | Direction | Signal | Channels |
|---|---|---|---|---|
| Headphone Out (3.5mm) | TRS EIGHTH | output | analog audio | — |
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