PSB M4U 9 Wireless ANC Headphones
PSB M4U 9 Wireless ANC Headphones PSB M4U 9 Wireless ANC Headphones PSB M4U 9 Wireless ANC Headphones PSB M4U 9 Wireless ANC Headphones

Uncompromising sound quality plus long-lasting comfort with the PSB M4U 9 Wireless ANC Headphones. Equipped with Audiodo Personal Sound™ technology, graphene-infused drivers, all-digital ANC signal path, and RoomFeel™ tuning for a customized audio experience. Plus, ergonomic ear cups and headband for a luxurious feel. Enjoy Active Noise Cancelling, Bluetooth aptX Adaptive, and a smartphone app for precise control. A must-have for audiophiles on the go.


  • Bluetooth HD wireless connection with Qualcomm® aptX™ Adaptive and cVc™ technology
  • Graphene-infused, 40mm drivers
  • Separate Active Noise Cancelling (ANC), Active, and Passive Modes
  • All-digital ANC with digital MEMS microphones decreases audio conversion error
  • PSB’s latest RoomFeel™ technology with greater detail and better imaging
  • Personal Sound by Audiodo™ through the PSB Headphones app
  • Access additional features, settings, and over-the-air updates using the PSB Headphones app
  • NFC pairing for supported devices
  • Over-ear, amplified, closed back design
  • Physical controls for volume, playback, and mode selection • Unique dual 3.5mm input connections (left or right side)
  • Tangle-free, braided cords for analogue wired and USB-C connection
  • 1/4” stereo and dual-input flight adapters
  • Runs on included rechargeable battery power
  • Up to 25 hrs battery playtime in Active Mode
  • Gyro-suspended ear pads
  • Carry case and easy folding for travel and storage

Price includes shipping to most areas of Canada

Frequency Response
  • LF Cutoff -10dB - 10Hz - 23kHz
  • LF Cutoff -3dB - 15Hz - 23kHz
  • Within +/- 1.5dB - 20Hz - 23kHz
Total Harmonic Distortion
  • ANC On (1kHz/1mW) - 0.5% 
  • ANC Off  (1kHz/1mW) - 0.25%
Power Handling 30mW
Impedance 32 Ohm
  • Type - Dynamic, Graphene infused
  • Operating Principle - Closed
  • Size - 40mm
Ear Coupling Circumaural
  • 3.5mm (1/8") stereo jack (left or right)
  • Bluetooth aptX Adaptive, AAC, SBC
  • USB-C
Battery Life
  • Wireless Active Mode - 25 hrs
  • Wireless ANC Mode - 18 hrs