While I'm not a formal tester or field agent for Genz, I was given an opportunity to give the new Shuttle 6.2 112T combo and extension cab a tryout.
This was a gutsy call by the Genz guys, since I was relatively negative on the original Shuttle 6 and combo cabs (nice, but a bit small sounding, and the Shuttle 6 head voicing didn't translate to larger cabs as well as other 400-600 watt heads IMO). Well, the new voicing of the head and the beefing up of the cabs puts both the 6.2 head and the Shuttle 112's into a new universe.
The 6.2 head has been revoiced by lowering that hi passing filter to really make the low end fat, so it really is just a lower powered 9.2, and will compete VERY well in the 400-600 watt micro head category. The cabs have beefed up drivers and tuning to handle the additional low end. The addition of the new limiting circuit results in the head sounding very fat when pushed.
I've also been critical of the 'all or nothing' voicing buttons, but these too have been re-voiced and are more subtle and usable... .