I know i can probably get better answers on headfi but this is the only tech website i have an account for so.. i currently have noise canceling headphones that cancel more of the lower frequency noise. is it possible to get cancellation for all spectrum? or is it for safety reasons? if there are though, which would you recommend? im not an audiophille so your "bose" and "beats" are okay lol. but of course the flatter frequency, better.