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| Price | $298.95 | $399.00 to $399.99 | $32.83 to $49.99 | $299.95 | $137.38 to $149.99 |
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| Release date | June 15, 2005 | November 18, 2008 | August 21, 2009 | ||
| The Bottom Line | Excellent noise abatement, powerful bass, and detailed sound are all pluses, but some users may find the MDR-NC50s a bit uncomfortable over the long haul. | The Sony MDR-NC500D Digital Noise Canceling Headphones may lighten the wallet, but they are a great option for frequent fliers and tetchy commuters who need superior noise cancellation. | The Sony MDR-NC7 Noise Canceling headphones are an OK option for travel fiends operating on a strict budget. | While they're no bargain, the Bose QuietComfort 15s currently offer the best sound and silencing capabilities in a pair of noise-canceling headphones. | Sennheiser's featherweight noise-canceling headphones are supercomfy and produce sound quality approaching that of some full-size models. |
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| Features | |||||
| Response Bandwidth | 14 - 22000 Hz | 5 - 24000 Hz | 30 - 20000 Hz | Info unavailable | 8 - 21500 Hz |
| Headphones Form Factor | Ear-cup | Ear-cup | Ear-cup | Ear-cup | Semi-open |
| Sound Output Mode | Stereo | Stereo | Stereo | Stereo | Stereo |
| Color | Info unavailable | Info unavailable | Black | Silver | Black Silver |
| 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 | Yes | Yes |
| Product Type | Headphones - Wired | Headphones - Wired | Headphones - Wired | Headphones - Wired | Headphones - Wired |
| Product Description | Sony MDR NC50 - Headphones | Sony MDR NC500D - Headphones | Sony MDR NC7/BLK - Headphones | Bose QuietComfort 15 Acoustic Noise Cancelling - Headphones | Sennheiser PXC 300 - Headphones |
| Manufacturer Warranty | Info unavailable | Info unavailable | Info unavailable | Info unavailable | 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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