Thanks @
bobadrunk and @
cehowardNote3 for your replies..
I bought the MK2 just for bluetooth audio, I have Viper4Android (V4A) installed on my phone, If you're not aware its a sound enhancement plugin for Android and it has so many features and it makes even the worst headphone to sound great..
The sound from MK2 is fine but when I turn on the "Dynamic bass" on V4A (
Its a kind of bass which gives you a same feel of a Subwoofer) the headphone cannot reproduce the punchy bass correctly at high volume(85 to 90%), But when its wired its fantastic and there's no issue..
There is no problem with my source because when I use the same source with my "Sony Smart wireless headset pro" http://www.sonymobile.com/global-en/products/accessories/smart-wireless-headset-pro/
which is also a
bluetooth earphone the sound is great as expected with full of powerful bass.
So I guess its a limitation with the "S Master amplifier" on the headphone with respect to
Bluetooth.
Its really frustrating since the cheapest "Smart wireless headset pro" is reproducing the sound perfectly while the costlier MK2 is not, on bluetooth..
If someone has V4A installed on your phone could you please test what I mentioned on the M2. thanks.