Sennheiser PXC 250-II vs Audio Technica ATH-E40 – Full Comparison & Verdict (2026)

- NoiseGardâ„¢ active noise cancellation technology - Ideal for use on a plane, train, bus or in any other noisy environment - Closed design ensure excellent passive attenuation of ambient noise, allowing you to enjoy your music without distractions - Suitable for all types of modern music: detailed sound reproduction with a slight emphasis on the bass - Steel-reinforced headband for high durability - Long lasting NoiseGardâ„¢ usage - a single alkaline battery lasts up to 50 hours! - Fold and flip: registered design allows the ear cups to be turned 90Â° and the headphones folded towards the headband (headphones will lock in open and closed positions) - Convenient carrying case included - Optimised for in-flight entertainment systems as well as MP3, iPod, iPhone (iPod and iPhone are trademarks of Apple Inc. registered in the U.S. and other countries) and portable media players - 2 year warranty

3-Year Warranty from Audio-Technica that covers manufacturing defects. The proprietary dual phase push-pull driver design of the ATH-E40 professional in-ear monitor headphones provides improved fidelity and efficiency. These headphones deliver powerful bass along with balanced mid and high frequencies to convey the full emotion of the music from the stage to the street. The headphones also come with a detachable 1.6 m (5.2') cable, with newly developed A2DC (Audio Designed Detachable Coaxial) connectors at the headphones and a 3.5 mm (1/8") stereo mini-plug output, and a carrying case. The ATH-E40 features specially designed housings that provide incredible isolation. The isolation â€“ and the comfort â€“ are enhanced by the four sizes of included silicone eartips (XS/S/M/L), which allow you to create a custom fit.

Key Differences

The frequency response differs (10 Hz - 21000 Hz vs 20Hz - 20KHz), which can influence how well the headphones reproduce lows, mids, and highs. Both headphones offer solid battery performance, making them suitable for long listening sessions and travel. Both models support modern Bluetooth connectivity, ensuring stable wireless performance with compatible devices. The driver size differs between the two (40 mm vs 8.5 mm), which can influence sound depth, bass response, and overall audio clarity. Sennheiser PXC 250-II and Audio Technica ATH-E40 are well-known options in the wireless headphone segment, offering a balance of audio quality, battery performance, and smart features. From a usability standpoint, both models provide a reliable and premium headphone experience. There is a noticeable difference in weight (Approx 66 g vs 10 GM), which may affect comfort during extended use. Sennheiser PXC 250-II and Audio Technica ATH-E40 offer different noise cancellation capabilities (Yes vs Sound Isolation), which can impact how effectively they block external noise. Impedance levels vary (160/300 Ohms-Active/Passive vs 12 ohm), which can affect compatibility and audio output when used with different devices.

Verdict: Choosing between Sennheiser PXC 250-II and Audio Technica ATH-E40 depends on whether you value better sound, longer battery life, or enhanced features.

Top Differences

Noise Cancelling: Yes vs Sound Isolation
Driver Size: 40 mm vs 8.5 mm
Weight: Approx 66 g vs 10 GM
Impedance: 160/300 Ohms-Active/Passive vs 12 ohm

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Key Differences

Top Differences