


PSB M4U TWM True Wireless Micro Planar Earphones
Be driven by precision sound.
Experience exceptional portable audio with PSB's TWM True Wireless Micro Planar Earphones. These earbuds feature advanced Magneto-Static technology and a Hybrid Planar dual-driver design for studio-quality sound in a compact form. Enjoy up to 8 hours of battery life with the included smart charging case. With technologies like aptX™ Adaptive Bluetooth, Audiodo™, and RoomFeel™, you can enjoy a customized audiophile-grade listening experience.

Superior Sound, Perfected for You
The TWM utilizes powerful Magneto-Static technology in a Hybrid Planar dual driver design for clear, detailed sound. A high-frequency Magneto-Static driver offers crisp, high-resolution sound even at low volumes, while the dynamic planar midrange/bass driver delivers deep bass and natural midrange. Custom hearing tests with Audiodo Personal Sound™ via the PSB ensure precise sound balance, with Volume Dependent Compensation and four EQ presets for tailored listening experiences.
Signature RoomFeel™ Tuning
PSB's RoomFeel™ technology emulates the experience of listening to high-quality speakers in a well-designed room, creating a natural sound. This technology incorporates research on 'Room Gain,' which accounts for the warmth and energy that room boundaries add to a speaker's response curve. RoomFeel minimizes the 'in your head' sensation, offering an open, in-room listening experience with the M4U TWM, ensuring a non-fatiguing and natural sound whether you're on the go or at the gym.
Active and Adaptive
The M4U TWM headphones adapt to your surroundings as you go about your activities. These headphones offer seamless pairing with aptX™ Adaptive Bluetooth, ensuring high-quality sound with low latency for gaming and movie watching. Whether you're at home or on a call outdoors, cVc™ (clear voice capture) technology minimizes background noise, ensuring clear voice quality in any environment.
Portable and easy extended listening
These earbuds feature convenient click buttons for volume control, track skipping, and calls. The smart charging case offers wired USB-C and wireless charging options, providing 8 hours of playback and 24 hours of backup power. Included are three sizes of silicon tips for noise isolation and secure fit. With an IP65 rating, they are sweatproof, water-resistant, and dustproof, perfect for active lifestyles. The PSB Headphones App enhances control with sound settings, Audiodo profiles, noise transparency levels, EQ presets, and battery monitoring.
SPECIFICATIONS
Frequency Response
Within ±1 1/2dB | 20 - 20,000Hz |
Transducer
Type |
Magneto-Static & Dynamic |
Operating Principle |
Sealed |
Size |
6mm |
Ear Coupling
Ear Coupling |
In-Ear |
Connection
Bluetooth version |
1/8”* (3.5mm) Stereo Jack (Left or Right) |
Bluetooth quality |
aptX™ Adaptive, AAC, SBC |
Operating distance |
10m |
Battery
Music time |
8 hours |
Charging time |
66 minutes |
Charging input |
5V, 1A |
Earbuds |
8 hours |
Case |
3 additional charge cycles |
Case recharge time |
2 hours |
Construction
Driver enclosure | ABS + Rubber |
Earpads |
Silicon |
Travel Case | Smart Charging |
Dimensions / Weights / Finish
Overall | 18 x 22 x 17mm (5/32 x 7/8 x 11/16”) |
Travel Case |
64 x 36 x 32mm (2 17/32 x 1 27/64 x 1 17/64”) |
Weight | 5g (0.18oz) |
Finish | Black |
Pairs well with

PSB M4U TWM True Wireless Micro Planar Earphones
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FAQs
Please read our FAQs page to find out more.
What products does Audio67 offer?
Audio67 specializes in high-quality headsets and microphones for gaming, professional use, and casual listening.
Where can I purchase Audio67 products?
You can buy Audio67 headsets and microphones from our official website, authorized retailers, and select online marketplaces.
Are Audio67 headsets compatible with all devices?
Most of our headsets are compatible with PCs, gaming consoles (PS5, Xbox, etc.), mobile devices, and tablets. Check the product specifications for detailed compatibility.
Are Audio67 headsets wireless or wired?
We offer both wired and wireless headsets. Please check the product description for details on connectivity.