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| Product | Koss UR-40 Collapsible | JVC Flats (Black) | Bose Quiet Comfort 15 | Koss PortaPro (with Case)  | Koss Pro3AA (Titanium) |
| Price | $29.99 to $97.89 | $9.89 to $14.99 | $299.00 to $299.99 | $39.99 to $59.99 | $60.47 to $64.99 |
| CNET editors' rating | Info unavailable | 4 stars | 4 stars | 4 stars | 3.5 stars |
| Average user rating | 3.5 stars | 4.5 stars | 4 stars | 4 stars | 2.5 stars |
| Release date | Info unavailable | November 22, 2010 | August 21, 2009 | January 1, 1984 | May 15, 2003 |
| Bottom line | Info unavailable | Though they look a little cheap, the JVC Flats are lightweight, comfortable on-ear headphones that sound surprisingly good for sub-$15 headphones. | While they're no bargain, the Bose QuietComfort 15s currently offer the best sound and silencing capabilities in a pair of noise-canceling headphones. | 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. | This affordable model offers the detail and transparency of expensive high-end speakers. |
| Product Description | Koss UR 40 | JVC HA S160-B | Bose QuietComfort 15 Acoustic Noise Cancelling - Headphones | Koss PortaPro - Headphones | Koss PRO 3AA - Headphones |
| Packaged Quantity | 1 | 1 | 1 | 1 | 1 |
| Product Type | - Wired | - Wired | Headphones - Wired | Headphones - Wired | - None Headphones - Wired |
| Headphones Type | Binaural | Binaural | Headphones - Binaural | Headphones - Binaural | Headphones - Binaural |
| Connectivity Technology | Wired | Wired | Wired | Wired | None Wired |
| Sound Output Mode | Stereo | Stereo | Stereo | Stereo | Stereo |
| Audio Specifications | Frequency Response 15 - 22000 Hz - Sensitivity 98 dB - Impedance 60 Ohm | Frequency Response 12 - 24000 Hz - Sensitivity 103 dB/mW - Impedance 32 Ohm | Info unavailable | Frequency Response 15 - 25000 Hz - Sensitivity 101 dB/mW - Impedance 60 Ohm | Frequency Response 15 - 20000 Hz - Sensitivity 100 dB/mW - Impedance 60 Ohm |
| Recommended Use | Info unavailable | Cellular phone Portable audio system | Digital player Cellular phone Home audio system PC multimedia | Portable audio system Home audio system | Home audio system Professional audio system |
| Full specifications | Full specifications | Full specifications | Full specifications | Full specifications | Full specifications |
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Koss UR-40 Collapsible compare
