Bowers & Wilkins PX7 S2 vs Sennheiser PXC 550-II – Full Comparison & Verdict (2026)

Ambient Pass-Through. Wear-Detection Sensor. Active Noise Cancellation. 7 Hour with 15 min charge. Premium design, perfect fit. Cancel the noise, not your music. Over-ear noise cancelling headphones. Hear what your music really sounds like. Microphone - 4 X Mics For ANC. 2 X Mics For Telephony. Px7 S2 uses custom-designed 40mm drive units, carefully angled inside each earcup for a truly focused, immersive listening experience.

Smart Pause Autopilot. First Class Call Quality. The Sound of Smart Travel. Your Personal Travel Assistant. Long Lasting Comfort, One Charge Travel One touch access to voice assistant: with the touch of a single button you have access to your AI helper: Siri, hey google and Alexa. Smart pause (activated via the app) auto on and off: swivel the ear cups to turn off, sensors detect when you wear the headphone and play or pause music. Touch control: a touch pad on the right ear cup provides vol, play, stop, pause and track skipping control, touching the ear cup allows you to take an incoming call. Exceptional battery performance up to 30 hours: the pxc 550-ii wireless delivers up to 30 hours of battery life, you can travel from London to Hong Kong and back with just one charge. Superior sound quality and active noise cancellation: the pxc 550-ii delivers Sennheiser .legendary sound quality, active noise cancellation reduces the ambient noise around you and can be adjusted.

Key Differences

In general, both options are suitable for everyday use including music, calls, travel, and work-from-home scenarios. The driver size differs between the two (32 mm vs 40 mm), which can influence sound depth, bass response, and overall audio clarity. The frequency response differs (17 Hz - 23000 Hz vs 10 Hz - 30000 kHz), which can influence how well the headphones reproduce lows, mids, and highs. Impedance levels vary (490 ohm vs 33 ohm), which can affect compatibility and audio output when used with different devices. Both headphones offer solid battery performance, making them suitable for long listening sessions and travel. There is a noticeable difference in weight (227 gm vs 307 gm), which may affect comfort during extended use. If you're comparing Sennheiser PXC 550-II and Bowers & Wilkins PX7 S2, both models offer a strong combination of sound performance, comfort, and modern wireless features. Sennheiser PXC 550-II and Bowers & Wilkins PX7 S2 offer different noise cancellation capabilities (Active / Passive vs ANC), which can impact how effectively they block external noise. Sennheiser PXC 550-II uses Bluetooth 5.0 while Bowers & Wilkins PX7 S2 supports Bluetooth 5.2, which can impact connectivity stability and efficiency.

Verdict: Both headphones offer strong performance, and the right choice depends on your priorities such as battery life, comfort, and noise cancellation.

Top Differences

Driver Size: 32 mm vs 40 mm
Bluetooth: 5.0 vs 5.2
Weight: 227 gm vs 307 gm
Impedance: 490 ohm vs 33 ohm

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Key Differences

Top Differences