Sennheiser PX 100-II vs Koss TD85 – Specs, Price & Comparison (2026)

- Open design for natural sound reproduction - Single-sided cable for convenient handling - Steel-reinforced headband for high durability - 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 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

- Oxygen-free copper voice coils improve signal transmission and conduction for cleaner, clearer sound - Adjustable headband and large leatherette ear cushions for custom fit - Steel yokes reinforce overall construction - Robust, yet surprisingly lightweight and comfortable, construction - Kevlar-reinforced, single-entry 8 foot, coiled cord with gold-flashed 3.5 mm (1/8-inch) plug (L-shaped to minimize cord stress) and gold-flashed 6.3 mm (1/4-inch) adapter - Simple, streamlined construction minimizes potential breakage - Covered under the Koss Stereo phones Limited Lifetime Warranty

Key Differences

The frequency response differs (15 Hz - 27000 Hz vs 20 Hz - 17000 Hz), which can influence how well the headphones reproduce lows, mids, and highs. Both models feature noise cancellation, helping reduce background noise for a more immersive listening experience. Both models support modern Bluetooth connectivity, ensuring stable wireless performance with compatible devices. Sennheiser PX 100-II and Koss TD85 are premium wireless headphones designed to deliver high-quality sound along with advanced features like noise cancellation and long battery life. There is a noticeable difference in weight (74 g vs NA), which may affect comfort during extended use. In general, both options are suitable for everyday use including music, calls, travel, and work-from-home scenarios. The driver size differs between the two (40 mm vs NA), 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. Impedance levels vary (32 Ohms vs 60 Ohms), which can affect compatibility and audio output when used with different devices.

Verdict: Both models are competitive, and your decision should be based on your usage needs and preferred features.

Top Differences

Driver Size: 40 mm vs NA
Weight: 74 g vs NA
Impedance: 32 Ohms vs 60 Ohms

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Key Differences

Top Differences