Bowers & Wilkins PI4 vs Sony INZONE H9 – Specs, Price & Comparison (2026)

A measured feel. Fits like no other. Donâ€™t miss a thing. Adaptive Noise Cancelling. World-first fully active 2-way wireless earbuds. This is Bowers & Wilkins Dual Driver technology. No matter what youâ€™re listening to, or watching, or playing, hear what you were meant to hear. If you stay out longer than expected and need a little more from your PI4 a 15 minute quick charge will carry your adventure for another two hours. Soft silicone and rubber together make the PI4 feel specifically designed for how and where you listen. 12-hour battery life allows you to go from night to day without missing a beat. If thatâ€™s not enough, a 15-minute quick charge gets three hours of immediate playback. Customised 14mm drivers pack full sound in a small space. Designed by the same team behind our 800 Diamond Series speakers used in Abbey Road Studios, the drivers ensure you stay immersed in music wherever you go.

Boom microphone for seamless team communication. Ambient Sound Mode keeps you aware of important sounds. Soft headband cushion and synthetic leather ear pads for wearing comfort. Personalized 360 Spatial Sound for Gaming provides precise rival detection. Discord certified, clear communications via a flexible flip-up boom microphone with mute function. Dual Sensor Noise Canceling Technology keeps out surrounding noise while Ambient Sound Mode keeps you aware of important sounds in your environment.

Key Differences

If you're comparing Bowers & Wilkins PI4 and Sony INZONE H9, both models offer a strong combination of sound performance, comfort, and modern wireless features. Bowers & Wilkins PI4 and Sony INZONE H9 offer different noise cancellation capabilities (Adaptive vs Ambient), which can impact how effectively they block external noise. The driver size differs between the two (14.2 mm vs 40 mm), which can influence sound depth, bass response, and overall audio clarity. There is a noticeable difference in weight (40 gm vs 330 Gm), which may affect comfort during extended use. Battery life varies between the two (12 Hours vs 32 Hours), which affects how long you can use them on a single charge. Both models support modern Bluetooth connectivity, ensuring stable wireless performance with compatible devices. The frequency response differs (10 Hz - 30000 kHz vs 5 Hz - 20000 Hz), which can influence how well the headphones reproduce lows, mids, and highs. From a usability standpoint, both models provide a reliable and premium headphone experience. Impedance levels vary (32 ohm vs NA), which can affect compatibility and audio output when used with different devices.

Verdict: Choosing between Bowers & Wilkins PI4 and Sony INZONE H9 depends on whether you value better sound, longer battery life, or enhanced features.

Top Differences

Battery Life: 12 Hours vs 32 Hours
Noise Cancelling: Adaptive vs Ambient
Driver Size: 14.2 mm vs 40 mm
Weight: 40 gm vs 330 Gm
Impedance: 32 ohm vs NA

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Key Differences

Top Differences