Thanks for the response.    I understand that turning the volume up will always have some detrimental effect and I do not wish to listen to my music at max volume but I have found that a comfortable listening volume for other IEMs (Brainwavz M1, Sennheiser CX300-ii for example) is incredibly...

Can anyone comment on how these compare to the M4s in terms of the 'brightness'? I have some M4s and while they amazing at low levels, I cannot stand the harshness once I turn the volume up. I am looking for some IEMs that I can turn up quite loud when necessary.

  Hi Guys,   Long time lurker, first time poster.   I recently bought some HM5s and I am loving them so far. I am no audiophile but to my ears these things are GOOD!!   I just saw these over on another site and wondered what your thoughts are. They are significantly cheaper than...