Koss QZ900

We haven't had a chance to fully test this product yet, but we've assembled this helpful overview of relevant information on it.

The QZ900 over-the-ear headphones by Koss feature active noise-cancelling technology, a 4-foot straight cable, and closed, cushioned leatherette earpads. Additional features include a 20 – 20,000 Hz frequency response, 100 dB/mW sensitivity, and 32 ohms impedance.

Features List:

  • Circumaural design
  • Active noise-cancelling technology
  • 4-foot straight cable
  • Cushioned leatherette earpads
  • 20 – 20,000 Hz frequency response
  • 100 dB/mW sensitivity
  • 32 ohms impedance

For more headphone buying tips, check out ourĀ Headphone Buying Guide.