Koss R80 vs Sennheiser HD 400S – Detailed Specs Comparison (2026)

- Dynamic element construction delivers accurate acoustic sound reproduction with a wide frequency response - Oxygen-free copper voice coils improve signal transmission and conduction for cleaner, clearer sound - Closed, leatherette ear cushions form comfortable seal around ears, enhancing bass frequencies and decreasing ambient noise - Adjustable headband adapts to any head size and shape for added comfort - 8 foot, single-entry coiled cord with 3.5 mm (1/8-inch) plug and 6.3 mm (1/4-inch) adapter - Covered under the Koss Stereo phones Limited Lifetime Warranty

Built-in microphone and remote for call and music control. Sennheiser sound quality for a unique listening experience. Lightweight, foldable headphones for easy on-the-go storage. Closed-back around-ear headphones reduce unwanted background noise for your comfort. Sennheiserâ€™s dynamic drivers deliver a well-extended sound response with dynamic bass for a unique listening experience and closed-back around-ear headphones reduce unwanted background noise for your comfort.

Key Differences

Both headphones offer solid battery performance, making them suitable for long listening sessions and travel. Impedance levels vary (60 Ohms vs 18 ohm), which can affect compatibility and audio output when used with different devices. If you're comparing Koss R80 and Sennheiser HD 400S, both models offer a strong combination of sound performance, comfort, and modern wireless features. The driver size differs between the two (NA vs 9.7 mm), which can influence sound depth, bass response, and overall audio clarity. There is a noticeable difference in weight (NA vs 217 Gm), which may affect comfort during extended use. The frequency response differs (16 Hz - 22000 Hz vs 18 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. Both models support modern Bluetooth connectivity, ensuring stable wireless performance with compatible devices. Koss R80 and Sennheiser HD 400S offer different noise cancellation capabilities (NA vs AMBIENT), which can impact how effectively they block external noise.

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

Top Differences

Noise Cancelling: NA vs AMBIENT
Driver Size: NA vs 9.7 mm
Weight: NA vs 217 Gm
Impedance: 60 Ohms vs 18 ohm

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Key Differences

Top Differences