Lab Tested & Gym Proven: Which Sony over-Ear Headphones Actually Survive Workouts?
By Maya Lin-Takahashi
The biggest hazard for over-ear units during intense physical exertion is ear cushion moisture absorption. The synthetic leather (protein leather) cushions on both the Sony WH-1000XM5 and WH-1000XM4 act as acoustic seals. They trap air to optimize low-end bass extension and passive isolation. During exercise, that trapped seal collects perspiration.
Moisture condenses inside the earcup chamber. Over successive workouts, salty sweat penetrates the internal mesh lining and settles on the acoustic driver faceplate. Unlike dedicated sports gear, neither over-ear flagship carries an IPX4 sweat resistance rating. Sony explicitly notes in its hardware warranty documentation that liquid damage from sweat voids repair coverage.
Internal inspection of units used heavily in athletic environments reveals recurring issues. Salt deposits build up on feedback microphones located inside the acoustic cavity. This degradation causes the ANC system to produce high-pitched squealing or cyclical clicking sounds as calibration algorithms fight corrupted frequency feedback. The ear cushions stiffen, crack, and peel within six to nine months of routine workout use, causing degraded sound isolation.
Maya is a hardware enthusiast who tests and reviews smart home devices, smartphones, wearables, and audio gear. She focuses on practical consumer value and build quality.
