PSB M4U 4 High Performance In-Ear Headphones

Model: M4U4BD UPC: 627523170661 Item: 1074

Color: Black - In Stock

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104 E Vine St.
Hatfield, PA 19440
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(866) 961-7781
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754 Route 309 (Bethlehem Pike)
Montgomeryville, PA 18936
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(215) 368-8343
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38 Greenfield Avenue,
Ardmore, PA 19003
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(610) 649-7002
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Beautiful stereo sound, taken with you wherever you go - the PSB M4U 4 In-Ear Headphones recreate the perfect soundstage within the confines of your ears. Using PSB's high definition technologies, like RoomFeel, you'll be entranced by the feeling of having a full set of speakers playing right through your eardrums. And it's ergonomically sound, so you can wear these headphones all day and during strenuous activity in comfort.

Product Information

PSB M4U 4 High Performance In-Ear Headphones

PSB gets up close and personal with your hi-fi. They've taken over 40 years of bringing real sound to real people and packed it into their exciting M4U 4 High Definition In-Ear Monitors. You're listening to music more than ever before, but now you can do it on-the-go in comfort and style with PSB's true-to-nature sound quality. The M4U 4 High Definition In-Ear Monitors are the latest addition to their popular M4U Headphone Series with PSB's very own innovative RoomFeel Technology that has won praise throughout the world.


PSB M4U 4 In-Ear Headphones Highlights:

  • Two-way Hybrid Dual-Driver Design with Moving Coil Dynamic low frequency driver and Balanced Armature high frequency driver
  • Precision crossover network
  • Two tangle-free cables, one with in-line remote, microphone, and telephone controls
  • Unique detachable cables with removable shirt clip
  • Made for iPhone certified
  • 1/4" stereo and 1/8" dual input flight adaptors
  • Small, Medium and Large pure silicone eartips
  • Small, Medium and Large Comply Foam Tx-200 ear tips with wax guard supplied
  • Convenient protective travel case
  • Carabiner travel clip


PSB M4U 4 In-Ear Headphones Features:

Good Sound Comes in Small Packages

  • With scientifically developed RoomFeel technology, you will be amazed that these in-ear M4U 4s allow you to experience the sound of high performance speakers in a perfect listening room wherever you go. The M4U 4 features a two-way Hybrid Dual-Driver System of dynamic and balanced armature drivers for true hi-fi listening.

Ergonomically Sound

  • These small and lightweight portable in-ear monitors are also designed for convenience for people on the move. The comfortable low profile ergonomic design and around-the-ear cable placement ensures that the M4U 4s stay in place for active listeners. Two fully detachable cables are included, one with a 3-button Apple remote with microphone for answering and making phone calls.

Comply Foam Tx-200 Series Eartips

  • The M4U 4 is supplied with Comply Foam Tx-200 Series Eartips for perfect in-ear fit and comfort. Made with high-tech, super-soft memory foam that is heat-sensitive and breathable, the Comply Foam Tx-200 Series Eartips conform to the dynamic shape of the ear canal. The foam's passive noise-reduction technology seals out unwanted ambient noise and pours pure music directly into your ears, without leaking bass. These eartips are extraordinarily soft and comfortable for long-term wear. Simply enjoy clear, crisp sound.
  • Standard silicon gel tips, a convenient carrying case, and stereo and airplane adaptors round out the M4U 4 accessories.


PSB M4U 4 In-Ear Headphones Specifications:

Frequency Range

  • -10 dB: 10Hz-20kHz
  • -3 dB: 15Hz-20kHz
  • +/ 1-1/2 dB: 20Hz-20kHz

THD, Total Harmonic Distortion

  • 1kHz/1mW: 0.25%

Power Handling

  • Maximum: 10mW


  • Nominal: 16 Ohms


  • Type: Hybrid Dynamic and Balance Armature
  • Operating Principle: Multi-Chamber Vented Design
  • Size: 8mm Dynamic, Single BA

Ear Coupling

  • In-Ear


  • 3.5mm (1/8") Stereo Jack


  • Standard Cable
    • Length: 1.2m (47")
    • Type: Detachable Tangle-free w/3 pole
  • Apple Cable
    • Length: 1.2m (47")
    • Type: Detachable Tangle-free w/4 pole


  • Driver Enclosure: ABS
  • Eartip Type: Comply Foam Tx-200 and Silicon
  • Travel Case: EVA

Size (W x H x D)

  • Travel Case: 110 x 70 x 25mm


  • 25g with cable


  • Detachable Cables
  • Replaceable Eartips
  • 2-Way System with Crossover
  • Ergonomic Design
  • Comfortable low profile fit for active listening
  • In-line Remote Control
  • Around Ear Cable Placement


What's In The Box:

  • Formed Travel Case
  • 1/8" to 1/4" (3.5mm to 6.3mm) Gold-plated Stereo Plug Adaptor
  • Airline Connection Adaptor
  • Carabiner Clip
  • 3 x Comply Foam Tx-200 Eartips (S, M, L)
  • 3 x Silicon Eartips (S, M, L)

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