The hd25 sp is kinda inefficient as a portable headphone and is 85 ohms not 65 ohm. They do however provide more isolation than anything I have except the hd280. The sp version is much less efficient
Originally Posted by Nagasaki_Kid /img/forum/go_quote.gif The sennhieser site clearly indicates that the hd25 sp is 85 ohm and 100dB. I think you are looking at the specs for the hd25-II
No. here is the link to the HD25-SP II at Sennheiser, and it shows the specs that I posted above.
that's strange this page indicates they are 85 ohms and I was going mostly by the the specs of the hd25sp Sennheiser USA - HD 25-SP II - Product Details My pair of hd25sp doesn't sound as efficient as the non US sennhieser site makes it out as,
Originally Posted by Nagasaki_Kid /img/forum/go_quote.gif that's strange this page indicates they are 85 ohms and I was going mostly by the the specs of the hd25sp Sennheiser USA - HD 25-SP II - Product Details My pair of hd25sp doesn't sound as efficient as the non US sennhieser site makes it out as,
Anyone interested should probably contact Sennheiser regarding the discrepancy to determine the correct specs.
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