[eyalcat]

Hi all,
 
Is there a way to physically distinguish between this HP revisions (for 2nd hand gear purchase purposes).
 
Thanks

 

[TMRaven]

1st version: black support for the magnets surrounding the diaphragm
2nd version white support
3rd version: lightish brown support
 
You have to remove the earpads to see the plastic support for the driver.  Black versions are prone to driver failure, lightish brown versions are prone to treble problems, and hifiman is currently replacing them free of charge for versions which are said to sound like 2nd version.

 

[xenaxance]

sorry for bumping an old thread..
i'm planning to buy HE-400
cant find any proper details and comparison about the versions or revisions of the HE-400
if there are any .. please point me to the same..
what versions are currently being sold

 

[ianeith]

Can we get some photographs, please?