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| Product | Koss QZ-2000 | Koss PortaPro (with Case)  | Audio-Technica ATH RE70WH (White) | Skullcandy FIX (White/Black) | Monster Harajuku Lovers Space Age |
| Price | $148.99 to $220.71 | $39.99 to $59.99 | $32.49 to $79.95 | $25.59 | $39.00 to $59.95 |
| CNET editors' rating | 3 stars | 4 stars | Info unavailable | Info unavailable | Info unavailable |
| Average user rating | 0 stars | 4 stars | 0 stars | 0 stars | 0 stars |
| Release date | Info unavailable | January 1, 1984 | Info unavailable | Info unavailable | Info unavailable |
| Bottom line | For smaller headphones, the QZ-2000s provide impressive noise cancellation and big-bottomed bass. | Koss hit a home run with the PortaPros. Love or hate the design, there's no denying the sound quality here: they're the ideal companion for mobile audiophiles and home theater enthusiasts. | Info unavailable | Info unavailable | Info unavailable |
| Product Description | Koss QZ 2000 - Headphones | Koss PortaPro - Headphones | Audio-Technica ATH RE70WH - Headphones | Skullcandy Fix - Headset | Info unavailable |
| Packaged Quantity | 1 | 1 | 1 | 1 | Info unavailable |
| Product Type | Headphones - Wired | Headphones - Wired | Headphones - Wired | Headset - Wired | Info unavailable |
| Headphones Type | Headphones - Binaural | Headphones - Binaural | Headphones - Binaural | Headset - Binaural | Info unavailable |
| Connectivity Technology | Wired | Wired | Wired | Wired | Info unavailable |
| Sound Output Mode | Stereo | Stereo | Stereo | Stereo | Info unavailable |
| Audio Specifications | Frequency Response 145 - 20000 Hz - Sensitivity 101 dB - Impedance 5 KOhm | Frequency Response 15 - 25000 Hz - Sensitivity 101 dB/mW - Impedance 60 Ohm | Frequency Response 10 - 24000 Hz - Sensitivity 100 dB/mW - Impedance 42 Ohm | Frequency Response 20 - 20000 Hz - Impedance 16 Ohm | Info unavailable |
| Full specifications | Full specifications | Full specifications | Full specifications | Full specifications | Full specifications |
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Koss QZ-2000 compare
