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Shure Incorporated, the leading manufacturer of microphones and audio electronics, today announced that the PSM 400 Personal Monitor System and the P4M Personal Monitor Mixer are now shipping. Shure's PSM 400 and P4M are two ground-breaking and affordable products that make it possible for working musicians to gain control of what they hear onstage by creating personal, in-ear monitor mixes. The new products are being sold in complete Personal Performance Packs and as individual components to allow musicians to build their own systems.

The PSM 400 provides an alternative to traditional floor wedge monitoring and shares the hallmarks of Shure's family of high quality, professional PSM systems used by touring artists worldwide. A short list of performers who have adopted Shure PSM systems include Beck, Roger Daltrey of The Who, Korn, Christina Aguilera, The Judds, Barenaked Ladies, Tom Jones, and Sheryl Crow.

The new system, like its predecessors, offers: a personal mix free of unwanted stage sounds; individual volume and balance controls; a freedom of movement that releases performers from standing in only one spot onstage; and an ease of portability far greater than bulky floor wedge monitors. Furthermore, PSM systems, when used properly, can aid performers in hearing conservation. These many benefits are further enhanced by the P4M mixer, which brings complete control of the in-ear mix right to the stage.

"Personal monitors have been so incredibly successful that you rarely spot a touring performer going onstage without being plugged into earphones, " said Steve Johnson, Vice President of Marketing for Shure Incorporated. "As the market leader, we knew it was time to create a more affordable version for the working musician."

PSM 400 Personal Monitor Features

  • Personal volume and balance controls
  • Mono, stereo, and MixModeTM operation
  • LCD screen with battery gauge
  • Sixteen UHF frequencies (wireless unit)
  • High-frequency equalization
  • Selectable, built-in limiter
  • Space-saving half-rack size

P4M Mixer Features

  • Four mic/line input channels (each with its own level and balance controls)
  • Four XLR split outputs
  • Tri-color input meters per channel
  • A pair of 1/4-inch balanced mix inputs (which can be used to add channels from a house console)
  • A pair of 1/4-inch balanced aux outputs
  • Space-saving half-rack size


The PSM 400 system and P4M mixer are offered both as Personal Performance Packs and as individual components that allow users to build their own systems. The PSM 400 Wireless Personal Performance Pack includes a P4R Receiver, P4T Transmitter, E1 Earphone, and a P4M Personal Monitor Mixer. The hardwired version consists of a P4HW Hardwired Personal Monitor, E1 Earphone, and P4M Personal Monitor Mixer.

Individual PSM 400 components, which can be purchased separately to build your own system, include:

  • P4R Wireless Receiver
  • P4T Wireless Transmitter
  • P4HW Hardwired Personal Monitor
  • P4M Personal Monitor Mixer
  • E1 Single Low Mass/High EnergyTM Driver Earphone

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