Sennheiser HD 598 vs Koss Pro4s – Which Headphones Are Better? (2026)

- High-end open circumaural headphones with E.A.R. technology for outstanding sonic accuracy and clarity - Sennheiser's innovative "Eargonomic Acoustic Refinement" (E.A.R.) design channels audio signals directly into your ears - State-of-the-art, advanced Duofol diaphragms for transparency and minimal distortion - Highly optimised, field-strengthened neodymium ferrous magnet systems for an excellent dynamic response - Surround reflector for extended spatial sound field - Lightweight aluminium voice coils for high efficiency and excellent dynamics - Special diaphragm geometry reduces intermodulation distortion - Highly constant, compressed cellulose fleece reduces total harmonic distortion - Premium beige and high-gloss burl wood parts for a sophisticated finish - Extremely comfortable velour ear pads and headband - Excellent connectivity, also with home Hifi equipment - 2-year warranty

- Full-size, over-ear Studio headphones - D-profile with memory foam cushions - Koss SLX40 Elements tuned for studio reference - Detachable cord with dual choice entry - Fold flat for portability - Carrying case - Covered under the Koss Stereophones Limited Lifetime Warranty

Key Differences

The driver size differs between the two (NA vs 40 mm), which can influence sound depth, bass response, and overall audio clarity. Both headphones offer solid battery performance, making them suitable for long listening sessions and travel. Both models feature noise cancellation, helping reduce background noise for a more immersive listening experience. Impedance levels vary (50 Ohms vs 35 Ohms), which can affect compatibility and audio output when used with different devices. Overall, both headphones are feature-rich and cater to users looking for a combination of sound quality, comfort, and wireless convenience. There is a noticeable difference in weight (294 g vs NA), which may affect comfort during extended use. The frequency response differs (12 Hz - 38500 Hz vs 10 Hz - 25000 Hz), which can influence how well the headphones reproduce lows, mids, and highs. Both models support modern Bluetooth connectivity, ensuring stable wireless performance with compatible devices. If you're comparing Sennheiser HD 598 and Koss Pro4s, both models offer a strong combination of sound performance, comfort, and modern wireless features.

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: NA vs 40 mm
Weight: 294 g vs NA
Impedance: 50 Ohms vs 35 Ohms

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Key Differences

Top Differences