HD25 SP II question
Nov 23, 2008 at 6:30 AM Post #2 of 9

J_C_Denton1

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No need for amp. If they are below 100 Ohms laptop and MP3 player can drive them without any problem.

Plus I found interesting discovery that my HD25 is louder at the same volume level compared to KSC-75, which is at 60 Ohm.
 
Nov 23, 2008 at 7:41 AM Post #3 of 9

Nagasaki_Kid

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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
 
Nov 23, 2008 at 8:43 AM Post #9 of 9

1Time

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Quote:

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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