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| Price | $59.67 to $129.99 | $102.00 to $219.99 | $98.88 to $199.95 | $31.99 to $38.00 | $89.95 to $99.99 |
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| Release date | February 14, 2003 | July 13, 2007 | January 01, 1984 | November 01, 2001 | |
| The Bottom Line | Highly effective noise-canceling circuitry mated with detailed sound and a comfortable fit--what's not to like? | Sennheiser's featherweight noise-canceling headphones are supercomfy and produce sound quality approaching that of some full-size models. | The JVC HA-NC250 Noise Canceling Headphones make a great travel companion for those who demand quality sound. And they may not be cheap, but they seem that way next to the Bose QuietComfort 3. | 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. | Sennheiser's versatile headphones sound great on DVDs and all kinds of music. |
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| Features | |||||
| Response Bandwidth | 10 - 21000 Hz | 8 - 21500 Hz | Info unavailable | 15 - 25000 Hz | 8 - 25000 Hz |
| Localization | Info unavailable | Info unavailable | Info unavailable | Info unavailable | English |
| Headphones Form Factor | Semi-open | Semi-open | Ear-cup | Semi-open | Ear-cup |
| Sound Output Mode | Stereo | Stereo | Stereo | Stereo | Stereo |
| Color | Info unavailable | Black Silver | Info unavailable | Info unavailable | Black |
| Connectivity Technology | Wired | Wired | Wired | Wired | Wired |
| Headphones Type | Headphones - Binaural | Headphones - Binaural | Headphones - Binaural | Headphones - Binaural | Headphones - Binaural |
| Active Noise Canceling | Info unavailable | Yes | Yes | Info unavailable | Info unavailable |
| Product Type | Headphones - Wired | Headphones - Wired | Headphones - Wired | Headphones - Wired | Headphones - Wired |
| Recommended Use | Portable audio system | Info unavailable | Info unavailable | Portable audio system | Home audio system Professional audio system |
| Product Description | Sennheiser PXC 250 - Headphones | Sennheiser PXC 300 - Headphones | JVC HA NC250 - Headphones | Koss PortaPro Headphones | Sennheiser HD 280 - Headphones |
| Manufacturer Warranty | 2 years warranty | 2 years warranty | Info unavailable | Limited lifetime warranty | 2 years warranty |
| Remote Control | None | None | None | None | None |
| Full specifications | Full specifications | Full specifications | Full specifications | Full specifications | Full specifications |
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