LemonSlice on 10 April 2015
Take a look at the Bose range: http://www.bose.com/controller?url=/shop_online/headphones/index.jsp
Great clarity and easy to discern sounds at lower volumes which might be what you're looking for. If you opt for an active noise canceling pair you'll also have much less need for masking and be able to hear well at even lower volumes.
