Beyerdynamic DT 297 PV MK II vs Koss QZ900 – Key Differences & Best Choice (2026)

Made in Germany. Available Variations DT 297 PV MK II / 80 ohms DT 297 PV MK II / 250 ohms Flexible, swiveling goose-neck for optimum positioning. Headset with condenser microphone for moderation ( closed ). Immunity to high-frequency disturbance (RFI) caused by GSM, DECT, UMTS, Tetra, etc. All versions of the DT 297 are supplied without a connection cable. Please order the desired connection cable at the same time.. High-quality condenser microphone capsule with cardioid characteristic, very good bass response, high noise cancellation and feedback prevention.

- Revolutionary Active Noise Reduction (ANR) headphone system reduces harmful and annoying low frequency sounds in noisy environments - Closed leatherette ear cushion for added passive noise reduction - Cord unplugs to enjoy passive and active noise cancellation wirelessly - Straight single-entry 4 foot cord with in-line volume control - Fold flat for portability; carrying case included - Covered under the Koss Stereophones Limited Lifetime Warranty

Key Differences

The frequency response differs (20 Hz - 20000 Hz vs 10 - 30.000 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. Impedance levels vary (32 Ohms vs 250 ohm), which can affect compatibility and audio output when used with different devices. Both headphones offer solid battery performance, making them suitable for long listening sessions and travel. Koss QZ900 and Beyerdynamic DT 297 PV MK II offer different noise cancellation capabilities (Yes vs NA), which can impact how effectively they block external noise. Both headphones are equipped with capable drivers that deliver balanced sound output suitable for music, calls, and entertainment. There is a noticeable difference in weight (NA vs 240 g), which may affect comfort during extended use. If you're comparing Koss QZ900 and Beyerdynamic DT 297 PV MK II, both models offer a strong combination of sound performance, comfort, and modern wireless features.

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

Top Differences

Noise Cancelling: Yes vs NA
Weight: NA vs 240 g
Impedance: 32 Ohms vs 250 ohm

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Key Differences

Top Differences