Up until 2 days ago i had the M2 & M1 ( i also got the M1s presale with a $5 off voucher $24.95)
after A / Bing them i felt they were too similar to keep them both.
The M2 does have a bit more bass extension and are a bit warmer in the mids. Not much difference in the highs.
Also the build of the M2 appears more solid.
I kept the M2s..
I listen to the M2s as much as i listen to my $100 RE-ZEROs.
M2s may not be analytically accurate like the ZEROs, but they...