Psb M4U 8 MKII
Image source — © Psb
Model name
M4U 8 MKII
Transducer principle
Dynamic or Isodynamic
Scheme
Closed
Wearing style
TWS
Frequency response low +/- 10dB (Hz)
10
Frequency response high +/- 10dB (Hz)
20 000
Max. sound pressure level (dBSPL (1 kHz @ 5% THD))
N/A
Connection type
Wireless
Connector (mm)
N/A
Sensitivity (dBSPL (1 kHz/ 1 mW)))
N/A
Impedance (Ohm (1 kHz))
32
Playback time (hours)
25
Weight (g)
342
Official link
M4U TWM — True Wireless Micro Planar in-ear headphones have received dual planar high and low frequency converters. The headphones also use aptX Adaptive Bluetooth, with clear tactile response buttons to make it easier to control playback and voice calls.
The acoustic part of the headphones is based on dynamic radiators with 40 mm graphene-coated diaphragms, and the Bluetooth version 5.2 adapter provides support for SBC, AAC, and aptX Adaptive codecs. The built-in battery provides 18 hours of autonomy with the noise reduction system turned on and 25 hours without it. The headphones weigh 362 grams.