M4U 8MKII vs Bowers & Wilkins Px7 S3
The Px7 S3's impedance is 33Ω against the M4U 8MKII's 32Ω and its high-frequency extension 30 kHz against 20 kHz. Both share bit depth (24-bit) and driver size (40mm).
AI-generated product photo — not official manufacturer imagery.
HeadphonesWireless HeadphonesOver-Ear Headphones
About the M4U 8MKII
The PSB M4U 8 MKII are premium wireless ANC headphones featuring enhanced sound quality, advanced noise cancellation, and exceptional comfort for extended listening. They include 40mm drivers for detailed, low-distortion sound, Audiodo Personal Sound calibration via the PSB Headphones app, and RoomFeel technology that emulates the acoustics of PSB speakers in a room. Supporting Bluetooth 5.0 with aptX HD and AAC codecs, they offer reliable wireless connectivity, high-quality calls with built-in mics, and modes including ANC, Transparency, Active, and passive wired listening. Battery life reaches 25 hours in active mode and 18 hours with ANC, with USB-C charging and wired options via 3.5mm or USB-C. Constructed with premium plastics, gyro-suspended earpads tilted at 15 degrees, and expandable headband for comfort. They deliver natural musical dynamics, precise imaging, clear midrange, energetic bass, transparent mids, and crisp highs, suitable for work, travel, or entertainment.
Specifications
Transducer Specifications
Driver and acoustic performance characteristics
- Sensitivity
- 99.8 dB SPL @ 1W/1m
- Impedance
- 32Ω
- Frequency Response
- 20 Hz - 20 kHz
- Power Handling
- 5.5W
Headphone Design
Headphone driver and design characteristics
- Type
- over-ear
- Driver Type
- dynamic
- Open/Closed Back
- Closed Back
- Driver Size
- 40mm
Connectivity
Input and output connections
- Bluetooth
- Yes
- Bluetooth Codecs
- aptX HD, AAC, SBC
- Wi-Fi
- No
- Ethernet
- No
- Analog Inputs
- 3.5mm miniplug, 1/4" adapter, airline adapter, USB-C
Physical Dimensions
Size, weight, and appearance
- Weight
- 0.34 kg (1 lbs)
Key Specifications
Sensitivity: 99.8 dB
Impedance: 32Ω
Frequency: 20-20000 Hz
Specifications are community-contributed and may not be accurate or complete. Verify all details with the manufacturer before making purchasing decisions. Terms & Conditions