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PSB M4U 8 MKII – Wireless ANC Headphones

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Premium Wireless Active Noise Canceling Headphones.
PSB’s award-winning wireless active noise canceling headphones are reborn as the M4U8 MKII with exciting feature upgrades. Enhanced battery life and the latest noise canceling technology will improve mobile listening, while Audiodo Personal Sound will compensate for your unique hearing abilities, letting you fully experience PSB Speakers’ renowned sonic signature. Work or play, PSB Speakers’ headphones are designed for comfortable and noise-free extended listening.

  • High-performance wireless noise canceling headphones
  • PSB’s award-winning “true-to-nature” sound signature
  • All-digital adaptive noise canceling (ANC) for pure noise-free listening
  • Custom audio calibration with Personal Sound by Audiodo™

Sound tailored to you
No two people hear the same — hearing will even differ between the left ear and the right ear in the same person. Many factors affect hearing, including the shape and size of ears and ear canals, as well as damage to cilia from loud noises or infection. These combined with personal preferences and everyone’s unique neurological patterns means that the sophistication of human hearing as a sense is often taken for granted. Through a series of audio tests and questions, Audiodo’s Personal Sound technology quickly creates a personal hearing profile for you that compensates for anomalies in sound perception and hearing abilities, allowing you to fully reveal the True-to-Nature sound signature PSB Speakers is known for.

A full-featured app allows you to personalize your listening experience and keep your headphones updated with the latest firmware updates and codecs. Adjust the sound of your headphones to fit your personal hearing profile using Audiodo’s breakthrough Personal Sound technology and customize the sound settings to your preferences and environment. Track your battery status, access user manuals, and control the devices your headphones are connected to.

Behind RoomFeel technology
Designing headphones and designing speakers are different disciplines, and while many companies use similar criteria for speakers meant for in-room listening as for the speakers clamped onto the sides of your head, PSB takes a different approach. With the latest generation of its groundbreaking RoomFeel technology, PSB uses precisely designed target curves to recreate the experience of in-room hi-fi listening in headphones. Based on seminal research in the field of psychoacoustics, while also designing around the listening fatigue that is often associated with active noise cancellation technologies, the M4U 8 MKII offers a natural listening experience even during long journeys, binge-watching sessions, or marathon work days.

Block out the noise
The M4U 8 MKII features an all-new, all-digital signal path design that ensures state-of-the-art active noise canceling capabilities, cutting down the number of conversion steps required in the audio chain to keep it clean and noise-free. External sounds are detected, analyzed, and canceled out in nanoseconds across the widest possible frequency and decibel ranges. Highly sensitive Knowles MEMS microphones cut down on system noise to deliver crystal clear call quality, while aptX HD Bluetooth makes your music sound like it is being piped straight from the studio.

True comfort, portability and functionality.
Toggle easily between passive active, and active noise canceling modes to suit your environment using the physical switch on the headphones, and fine tune the settings with the intuitive PSB Headphones Control app. Ergonomically designed, soft-foam earcups and top-quality materials in the headband allow for full comfort listening, even during marathon calls or travels. Extended battery life — trackable using the PSB Headphones app — delivers up to 50% more listening time over the previous generation M4U 8.


  • High-performance wireless noise canceling headphones
  • PSB’s award-winning “true-to-nature” sound signature
  • All-digital adaptive noise canceling (ANC) for pure noise-free listening
  • Custom audio calibration with Personal Sound by Audiodo™
  • New PSB headphone app for more control and personalization
  • Up to 25 hours of battery life for all-day wireless playback
  • Powerful rechargeable battery with a USB C charger
  • Compatible with iOS and Android devices


  • Frequency Response
  • LF Cutoff -10dB: 10-20,000Hz
  • LF Cutoff -3dB: 15-20,000Hz
  • Within ±1 1/2dB: 20-20,000Hz
  • THD, total harmonic distortion
  • ANC: ON (1kHz/1mW): 0.5%
  • ANC: OFF (1kHz/1mW): 0.25%
  • Power Handling
  • Maximum: 30mW
  • Impedance
  • Passive: 32 Ohms
  • Transducer
  • Type: Dynamic
  • Operating Principle: Closed
  • Size: 40mm
  • Ear Coupling
  • Ear Coupling: Circumaural
  • Connection
  • 1/8” * (3.5mm) Stereo Jack (Left or Right)
  • Bluetooth aptX® HD
  • USB C
  • Cables
  • Standard Cable - 2m (78 3/4") Detachable Tangle-free
  • USB Cable - 2m (78 3/4") Detachable Tangle-free
  • Battery Life
  • Wireless Active Mode: 25 hrs
  • Wireless ANC Mode: 18 hrs
  • Construction
  • Headband: Spring Steel
  • Driver Enclosure: ABS + Polycarbonate
  • Earpads/Headpad Cover: Leatherette
  • Travel Case: EVA
  • Dimensions / Weights / Finish
  • Overall: 7 7/8 x 7 7/8 x 2 7/8 (200 x 200 x 70mm) (Travel Case)
  • Ear Cushion Outside: 2 3/4 x 3 7/8 x 3/4” * (68 x 98 x 17mm)
  • Weight: 12oz (342g) with cable
  • Finish: Jet Black
  • Notes
  • * Non-metric measurements are approximate.
  • All specifications are subject to change without notice.
Bluetooth Headphones
Bluetooth Headphones

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