* These are with Alpha Pads. Stock pads did IMO hell of a lot bettar: http://www.changstar.com/index.php/topic,1926.msg52112.html#msg52112

Sound

These are quite bassy and with considerable amount of impact. Unfortunately, the bass area is not clean. There is considerable amount of distortion. Not enough to completely draw me away from them, but enough to be noticeable and problematic with certain songs. 

The balance from mids to treble is not too horrible, but there is some edge in the mids that may be troublesome for some. There is also some hollowness in these that makes some live recordings loose credibility. Resolution is not very good.

Treble is not offensive or painful in any way which is a good thing. It is also reasonably well extended.

These isolate pretty well.

Comfort

I think these are not too bad in the comfort area. A little tight, but can wear them for a while with no major objections.

Presentation

Like. However these cans are freaking huge!



Price

$280 $180 seems to be the street price, which I think is too steep for what one gets. One does seem to get the kool factor of having two drivers per channel though:

* "Kelton-method" producing "rich bass sound with 55mm carbon diaphragm unit and dual stream duct" -> Huge driver towards the back of the cup.
* "Special tuned 30mm driver unit with carbon nano tubes diaghragm" -> Second wimpy driver with some random diaphragm technology (JVC needs to fix their Marketing blab typo)

Stupid Plots

... which are proly "contrary to ACTUAL scientific concordance":

Frequency Response



Distortion Right



Distortion Left



CSD Right



CSD Left



Impedance