Hey all, I have recently purchased the Zu Mobius for the HD600/650. So far the Mobius have about 75- 100 hours of burn in while the Equinox is completely burnt in.
Appearance wise, the Mobius has a very solid built especially with the aluminium plugs. Believe me the plugs are really made to last. However there is just one complain regarding the bulit is that due to the rough surface of the tech flex, the cable is a little microphonic.
Both the Mobius and the Equinox are much better sounding than the stock HD650 cable. The treble of the HD650 is slightly recessed to me. Both the Mobius and the Equinox brings the treble foward and adds more details to the sonic presentation. However the the Mobius does this a little better than the Equinox. The treble has a better presence on the Mobius. This maybe an advantage or a disadvantage depending on the amps, recording or source.
For the bass, the Mobius is better that the Equinox, it is slightly tighter and it goes down deeper. In addition the Mobius has a tad more slam. As for the vocals, I prefer the Equinox over the Mobius. It seems like vocals are sweeter and slightly more lush on the Equinox. Last but not least, the Equinox has more "air" i.e soundstage than the Mobius, but the Mobius has better separation.
To sum it all up, both the cables are much better than the stock. I would not say the Equinox is better than the Mobius or the way round. I would prefer to put it as both cables offers different flavours of improvement to the HD650. Right now, the Mobius is staying with HD650 and the Equinox is staying with the HD600.
Last but not least, IMHO, YMMV, etc etc
Setup used:
Consonance 1.1 -> KS1030-> Corda HA1