Headphones
Koss Porta Pro
Koss · 1984
The Koss Porta Pro is a lightweight, foldable on-ear headphone introduced in 1984, featuring dynamic drivers and a retro design with foam ear cushions and an adjustable headband. It uses a dual-entry cable and includes a limited lifetime warranty.
Specifications
| Frequency response | 15 Hz – 25 kHz |
| Sensitivity | 101 dB SPL/mW |
| Impedance | 60 Ω |
As stated by the manufacturer — not community data.
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