These Cans are designed that way I have confirmed from Sennheiser Rep. he said To completely cut off the volume then one has to do it from the source connected i.e ( Computer, Smartphone, Ipod ). I even bought Sennheiser PC 350 and PC 360 Special Edition from best buy just to check the above...

When ever I turn the volume dial all the way down to ( - ) but it doesn't get muted there's still sound coming out of these cans ( not that very little volume ) right now as I am writing, the headset is placed at least 1 feet away from my ear and I can still hear the song clearly. Right now i...