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| Product | Sony MDRNC33 (Black) | Sennheiser MM30i | Thinkpad In Ear Headphones | Bose Quiet Comfort 15 | Sony MDRNC13 (Black) |
| Price | $99.99 to $104.34 | $59.95 to $79.95 | $15.96 to $27.92 | $299.00 to $299.99 | $39.99 to $73.99 |
| CNET editors' rating | Info unavailable | Info unavailable | Info unavailable | 4 stars | Info unavailable |
| Average user rating | 4 stars | 0 stars | 5 stars | 4 stars | 3.5 stars |
| Release date | Info unavailable | Info unavailable | Info unavailable | August 21, 2009 | Info unavailable |
| Bottom line | Info unavailable | Info unavailable | Info unavailable | While they're no bargain, the Bose QuietComfort 15s currently offer the best sound and silencing capabilities in a pair of noise-canceling headphones. | Info unavailable |
| Product Description | Sony MDR NC33 | Sennheiser MM 30i | Lenovo ThinkPad In-Ear Headphones | Bose QuietComfort 15 Acoustic Noise Cancelling - Headphones | Sony MDR NC13 - Headphones |
| Packaged Quantity | 1 | 1 | 1 | 1 | 1 |
| Product Type | - Wired | - Wired | - Wired | Headphones - Wired | Headphones - Wired |
| Headphones Type | Binaural | Binaural | Binaural | Headphones - Binaural | Headphones - Binaural |
| Connectivity Technology | Wired | Wired | Wired | Wired | Wired |
| Sound Output Mode | Stereo | Stereo | Stereo | Stereo | Stereo |
| Audio Specifications | Frequency Response 10 - 22000 Hz - Impedance 16 Ohm | Frequency Response 17 - 20000 Hz - Sensitivity 106 dB - Impedance 16 Ohm | Frequency Response 20 - 20000 Hz - Sensitivity 100 dB | Info unavailable | Frequency Response 10 - 22000 Hz - Sensitivity 99 dB/mW - Impedance 19 Ohm |
| Recommended Use | Info unavailable | Tablet Cellular phone Portable audio system | PC multimedia Notebook | Digital player Cellular phone | Portable audio system |
| Full specifications | Full specifications | Full specifications | Full specifications | Full specifications | Full specifications |
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