jant71 and quartertone:
I looked on Yahoo Japan and see there appear to be two colours on the exact same model , same price.
Aluminum and
brass coloured on the 650 models.
At first I thought they were using brass and aluminum as the metal, but apparently not. Seems to be the colours.
Or am I missing something?
Then i am getting something about brass for resonance control in the tubes. Anybody know for sure what's going on here?
These look interesting thanks for the post!
Quote: Originally Posted by
jant71 ![](http://www.head-fi.org/img/forum/go_quote.gif)
Metal housing having excellent vibration-damping properties
MDR-EX450 adopt the aluminum housing/MDR-EX650, brass (brass) to the sound conduit and housing.
metal housing with high rigidity, has excellent internal loss characteristics to suppress unwanted vibration, I realize the midrange and clear smooth response in the low frequency range.