The PSB M4U 9 offer good sound and wireless performance, but fall short elsewhere. The build quality is creaky, the battery life is awful, and the ANC is no match for the best at their price point. You can get better quality and value elsewhere. Energetic, clear soundStrong wireless performance

Underwhelming noise-cancellingCreaky build qualityPoor battery lifeExpensive for the calibre of performance BluetoothAAC and aptX Adaptive Bluetooth connection
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