Sennheiser RS 165 vs Sony WH-CH720N – Specs, Price & Comparison (2026)

- TR 165 transmitter - Audio cable (analog) - Power supply with 4 adapters - 2 AAA NiMH rechargeable batteries - Closed, circumaural headphones with excellent digital wireless audio transmission - High-quality Sennheiser transducers and a selectable Bass Boost mode for vibrant sound - Intelligently designed controls for maximum ease of use - Multi-purpose transmitter â€“ also functions as â€˜easy-chargeâ€™ cradle and docking station - Multi-receiver transmission â€“ transmitter supports up to two pairs of headphones simultaneously - Ergonomic design for enhanced wearing comfort - 2-year warranty

Super comfortable and lightweight design. All-day listening with up to 35 hours of battery life. High sound quality and well-balanced sound tuning. Sonyâ€™s lightest Wireless Noise-cancelling headband ever. Easy and clear hands-free calling and voice assistant with wake word. Multi-Point Connection helps to pair with two Bluetooth devices at the same time. DSEEâ„¢ restores high-frequency sound and fine fade-out sound lost in compression. Noise Cancelling with Dual Noise Sensor technology and the Integrated Processor V1. Up to 50-hour battery life with quick charging. 3 min charge for up to 1 hour of playback. Crystal clear hands-free calling and voice assistant with Precise Voice Pickup technology. Adjustable Ambient Sound mode and Adaptive Sound control features tailors sound to suit the environment around you. Take noise cancelling to the next level with Sonyâ€™s Integrated Processor V1,so you can fully immerse yourself in the music.

Battery life varies between the two (18 Hrs vs 35 Hours NC ON, 50 Hours NC OFF.), which affects how long you can use them on a single charge. The frequency response differs (18 Hz-21,000 Hz vs 7 Hz - 20,000 Hz), which can influence how well the headphones reproduce lows, mids, and highs. The driver size differs between the two (NA vs 30 mm), which can influence sound depth, bass response, and overall audio clarity. Impedance levels vary (32 Ohms vs 325/31 ohm), which can affect compatibility and audio output when used with different devices. There is a noticeable difference in weight (Approx. 300 g vs 192 Gm), which may affect comfort during extended use. Both models support modern Bluetooth connectivity, ensuring stable wireless performance with compatible devices. Sennheiser RS 165 and Sony WH-CH720N offer different noise cancellation capabilities (NA vs Ambient NC), which can impact how effectively they block external noise. Sennheiser RS 165 and Sony WH-CH720N are well-known options in the wireless headphone segment, offering a balance of audio quality, battery performance, and smart features. In general, both options are suitable for everyday use including music, calls, travel, and work-from-home scenarios.

Verdict: Both models are competitive, and your decision should be based on your usage needs and preferred features.

Top Differences

Battery Life: 18 Hrs vs 35 Hours NC ON, 50 Hours NC OFF.
Noise Cancelling: NA vs Ambient NC
Driver Size: NA vs 30 mm
Weight: Approx. 300 g vs 192 Gm
Impedance: 32 Ohms Vs 325/31 ohm

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Top Differences