Audio Technica ATH-WP900 vs Sennheiser HD 660S2 – Key Differences & Best Choice (2026)

All Audio-Technica wooden headphones are hand-assembled in Tokyo. Earpads and headband are made from smooth, synthetic leather for long-lasting comfort. Diamond-Like Carbon coating applied to diaphragms to improve high-frequency response. Swivel-flat design enables headphones to easily be transported in included carrying pouch. Exclusive 53 mm drivers with powerful magnetic circuitry deliver exceptional full-range audio. Top-mounted PCB construction helps regulate airflow to enable precise diaphragm movement. Maple housings fuse thin slice of flame-grain maple on top of solid, machined maple for stiff, dense housings that look as good as they sound. Angled baffle improves airflow between the front and rear of the diaphragm for better low- to mid-range audio reproduction, and helps seal the earcup. The flame maple finish, provided by Japanese guitar manufacturer Fujigen, brings out the unique grain of each housing for a beauty that will deepen with age.

Plush ear cushions and open design for maximum comfort. Outstanding quality designed in Germany, made in Ireland. Intimate sound with great timbre and deep, accurate sub bass. Uniquely powerful vented magnet system for minimized distortion. Ultra-light aluminium voice coil with 300-ohm impedance for excellent impulse response.

Key Differences

The driver size differs between the two (38 mm vs 53 mm), which can influence sound depth, bass response, and overall audio clarity. The frequency response differs (8 Hz -41500 Hz vs 5Hz - 50KHz), which can influence how well the headphones reproduce lows, mids, and highs. Sennheiser HD 660S2 and Audio Technica ATH-WP900 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. Impedance levels vary (300 ohm vs 38 ohm), which can affect compatibility and audio output when used with different devices. Both models support modern Bluetooth connectivity, ensuring stable wireless performance with compatible devices. There is a noticeable difference in weight (260 Gm vs 243 GM), which may affect comfort during extended use. Both headphones offer solid battery performance, making them suitable for long listening sessions and travel. Sennheiser HD 660S2 and Audio Technica ATH-WP900 offer different noise cancellation capabilities (AMBIENT vs Sound Isolation), which can impact how effectively they block external noise.

Verdict: Choosing between Sennheiser HD 660S2 and Audio Technica ATH-WP900 depends on whether you value better sound, longer battery life, or enhanced features.

Top Differences

Noise Cancelling: AMBIENT vs Sound Isolation
Driver Size: 38 mm vs 53 mm
Weight: 260 Gm vs 243 GM
Impedance: 300 ohm vs 38 ohm

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Key Differences

Top Differences