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| Product name | |||||
| Price | $41 to $59 at 2 stores | $89 at 1 store | $34 to $39 at 3 stores | $39 to $39 at 3 stores | $89 to $149 at 4 stores |
| CNET editors' rating |
Not yet rated
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Not yet rated
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Not yet rated
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3.5 stars
Very good
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| Average user rating | 4.0 stars out of 2 reviews | 0 stars No reviews, write one! | 4.0 stars out of 42 reviews | 4.0 stars out of 1 review | 3.5 stars out of 54 reviews |
| Release date | October 02, 2007 | October 02, 2007 | January 01, 1984 | June 18, 2006 | September 19, 2007 |
| The Bottom Line | 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. | These full-size earcup 'phones deliver excellent reproduction of today's popular music. | Basic specs |
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| Features | See What's the Same or What's different | ||||
| Response Bandwidth |
10 - 20000 Hz |
12 - 28000 Hz |
15 - 25000 Hz |
18 - 19000 Hz |
5 - 30000 Hz |
| Headphones Form Factor |
Ear-cup |
Ear-cup |
Semi-open |
Ear-cup |
Ear-cup |
| Sound Output Mode |
Stereo |
Stereo |
Stereo |
Stereo |
Stereo |
| Color |
Black |
Black |
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 |
Info unavailable | Info unavailable | Info unavailable |
| Product Type |
Headphones - Wired |
Headphones - Wired |
Headphones - Wired |
Headphones - Wired |
Headphones - Wired |
| Recommended Use |
Portable audio system PC multimedia Game console |
Portable audio system PC multimedia Game console |
Portable audio system |
Portable audio system PC multimedia Home audio system |
Portable audio system Professional audio system Home audio system |
| Product Description |
JBL Reference 410 - Headphones |
JBL Reference 510 - Headphones |
Koss PortaPro Headphones |
Sennheiser HD 415 - Headphones |
Sony MDR V700DJ - Headphones |
| Manufacturer Warranty | Info unavailable | Info unavailable |
Limited lifetime warranty |
2 years warranty |
1 year warranty |
| Remote Control |
None |
Info unavailable |
None |
None |
None |
| Full specifications | Full specifications | Full specifications | Full specifications | Full specifications | Full specifications |
| Buying choices |
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