Koss SP540 vs Sennheiser HD 598 – Which Headphones Are Better? (2026)

- Full size, over-ear isolating headphones - D-profile with memory foam cushions - Koss PLX40 Elements tuned for personal listening - Detachable cord - Fold flat for portability - Carry case - Covered under the Koss Stereophones Limited Lifetime Warranty - Lightweight Design

- 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

Key Differences

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. There is a noticeable difference in weight (294 g vs NA), which may affect comfort during extended use. Sennheiser HD 598 and Koss SP540 are premium wireless headphones designed to deliver high-quality sound along with advanced features like noise cancellation and long battery life. 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. Both models support modern Bluetooth connectivity, ensuring stable wireless performance with compatible devices. From a usability standpoint, both models provide a reliable and premium headphone experience.

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