Rolls PM351 Personal Monitor
Rolls·Model PM351·rolls-pm351
Photos
Manufacturer product photography — the drawn faceplate above stays true to panel layout; these show the hardware itself.
About the Rolls PM351
The Rolls PM351 is a simple belt-clip personal monitor mixer that lets a musician blend up to three audio sources into their headphone or IEMIn-Ear Monitor — earpieces that replace floor wedges, feeding each player their own mix. The reason this whole rack exists. mix. It is commonly used to add an ambient mic feed or click trackThe metronome in the band’s ears keeping everyone locked to tempo — essential once backing tracks or timecode join the show. alongside a stereo monitor mix, giving performers a basic but effective way to customize what they hear. At this price point, it is the most affordable way to give a musician personal mix control.
The Rolls PM351 is a belt-clip personal monitor mixer aimed squarely at the performer who wants some control over what lands in their ears without burdening the monitor engineer with every adjustment. It accepts up to three sources — one via XLRThe standard 3-pin locking connector for mics and balanced line signals — pin 1 is the shield, pins 2 and 3 carry the balanced pair. and one via quarter-inch 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. on the input side — blends them at a personal level, and sends the result to a headphone or IEMIn-Ear Monitor — earpieces that replace floor wedges, feeding each player their own mix. The reason this whole rack exists. output. The classic use case is a musician taking a stereo mix from the console, adding their own ambient mic or click trackThe metronome in the band’s ears keeping everyone locked to tempo — essential once backing tracks or timecode join the show. feed, and riding the blend themselves during the show.
Because the PM351 draws no power from the mains and weighs next to nothing, it disappears into a rig without friction. There is no rack footprint to plan around — it clips to a belt, a mic stand, or a guitar strap. The XLRThe standard 3-pin locking connector for mics and balanced line signals — pin 1 is the shield, pins 2 and 3 carry the balanced pair. input means it can accept a direct feed from a monitor mix output or a dedicated auxAn auxiliary mix output — each aux is its own independent blend of the channels, typically one per monitor mix or effects send. without an adapter. The headphone output handles standard IEMsIn-Ear Monitor — earpieces that replace floor wedges, feeding each player their own mix. The reason this whole rack exists. and headphones. What it does not do is provide any gainHow much the preamp amplifies the incoming signal. Too low and you’re hunting through hiss; too high and peaks clip. structure sophistication, phantom powerThe +48 V a console sends up the mic cable to power condenser mics and active DI boxes — invisible to gear that doesn’t need it., or stereo busA path where multiple channels sum into one signal — mixes, groups, and mains are all buses. A 25-bus console can build 25 blends at once. management, so it works best when the signal arriving at it is already at a sensible line or monitor level.
This unit belongs in the hands of a musician who needs a quick, cheap way to add one or two supplemental feeds — a click, a guide vocal, an ambient room mic — on top of what the console is already sending them. Touring engineers who hand these off to performers as a self-serve solution will find them reliable for that limited job. If your performer needs a true personal mixing station with multiple auxAn auxiliary mix output — each aux is its own independent blend of the channels, typically one per monitor mix or effects send. returns, individual EQ, or stereo image control, look at a dedicated personal monitoring system like the Hear Technologies or Aviom families. The PM351 is a supplement, not a replacement, for a real IEMIn-Ear Monitor — earpieces that replace floor wedges, feeding each player their own mix. The reason this whole rack exists. infrastructure.
In the rack
- Feed the XLRThe standard 3-pin locking connector for mics and balanced line signals — pin 1 is the shield, pins 2 and 3 carry the balanced pair. input from a dedicated mono auxAn auxiliary mix output — each aux is its own independent blend of the channels, typically one per monitor mix or effects send. on the console — this keeps the click or ambient mic fully isolated and lets the engineer mute it at the desk if needed without touching the main mix.
- If your performer is on IEMsIn-Ear Monitor — earpieces that replace floor wedges, feeding each player their own mix. The reason this whole rack exists., verify their earphone impedanceOpposition to signal flow, in ohms. Low-impedance IEMs are easier to drive loud; mismatches shift level and tone. is in a range the PM351 can drive adequately; high-impedance headphones may come out quieter than expected since there is no amplifier stage spec published.
- Velcro a spare PM351 in the IEMIn-Ear Monitor — earpieces that replace floor wedges, feeding each player their own mix. The reason this whole rack exists. rack drawer as a backup — at this price and size it is worth carrying a second unit rather than losing a performer's mix confidence mid-show.
- Use the 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. quarter-inch input for a stereo-summed mix from a headphone amp output if you need to cascade it with another device upstream, keeping the XLRThe standard 3-pin locking connector for mics and balanced line signals — pin 1 is the shield, pins 2 and 3 carry the balanced pair. free for the direct console auxAn auxiliary mix output — each aux is its own independent blend of the channels, typically one per monitor mix or effects send..
3-channel personal monitor station. Belt-clip form.
I/O Ports (3)
| Port | Connector | Direction | Signal | Channels |
|---|---|---|---|---|
| XLR In | XLR FEMALE | input | analog audio | — |
| TRS In | TRS QUARTER | input | analog audio | — |
| Headphone Out | TRS QUARTER | output | analog audio | — |
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