I'm thinking of getting a M50. I already have a HD650. Will there be noticeably more bass on the M50? And more treble as well with a reduction in midrange?
The main thing I'm concerned about is bass - how does the M50 low and mid bass compare with the HD650?
And another thing - what actually is mid-bass as in what instruments occupy that frequency? The lower strings of electric guitars? Kick drums?