What's the difference of versions of Sennheiser Headphones HD-25? - Social Sound Design most recent 30 from http://socialsounddesign.com 2013-05-21T23:47:04Z http://socialsounddesign.com/feeds/question/5833 http://www.creativecommons.org/licenses/by-nc/2.5/rdf http://socialsounddesign.com/questions/5833/whats-the-difference-of-versions-of-sennheiser-headphones-hd-25 What's the difference of versions of Sennheiser Headphones HD-25? ORB 2011-02-03T12:30:09Z 2011-02-03T14:56:52Z <p>What's the difference of versions of Sennheiser Headphones HD-25?</p> <p>HD-25 BE (Basic Edition) HD-25 Sky HD-25-1 HD-25-1 II HD-25 SP HD-25 SP II HD-25 C II HD-25-13 HD-25-13 II</p> <p>I allready ask to sennheiser team, i'm waiting for their answers. Soon i receive i'll post here. Meantime I'm hoping you can tell me by your experience or your personal knowledge..</p> <p>(My interest is for field-recording and studio needs)</p> http://socialsounddesign.com/questions/5833/whats-the-difference-of-versions-of-sennheiser-headphones-hd-25/5834#5834 Answer by georgi for What's the difference of versions of Sennheiser Headphones HD-25? georgi 2011-02-03T14:51:10Z 2011-02-03T14:56:52Z <p>Says it in this <a href="http://www.sennheiser.com/sennheiser/products.nsf/resources/EFB3A02B6D2C39E0C1257482003EE614/%24File/HD_25-GB.pdf" rel="nofollow">PDF</a> on Sennheiser's website:</p> <p>HD25 </p> <ul> <li><p>impedance:</p> <ul> <li>70 Ω (HD 25-1 II) </li> <li>70 Ω (HD 25-C II) </li> <li>600 Ω (HD 25-13 II) </li> <li>70 Ω (HD 25-II)</li> </ul></li> <li><p>cable length</p> <ul> <li>HD 25-1 II: 1,5 m </li> <li>HD 25-C II: 3 m (1 m) </li> <li>HD 25-13 II: 3 m </li> <li>HD 25-II: 2 m</li> </ul></li> <li><p>SPL: 120 dB</p></li> <li>Frequency response: 16 – 22,000 Hz (- 3 dB)</li> </ul> <p>HD25 SP</p> <ul> <li>impedance: 60 Ω</li> <li>SPL: 100 dB ± 2 dB</li> <li>Frequency response: 30 – 16,000 Hz (- 3 dB)</li> </ul>