Thought I would start this thread and share some of my favourite settings and setups for the sIII and sIII-v6 (when I get one!).
JTM 45Volume - 8+
Master - 8
Treble -7
Mid - 4
Bass - 2
You can adjust the amout of edge in the distortion profile by using more volume and less master. Conversly, when you crank the master and roll back the mids you will get a more woody power tube distortion.
I used the TMB channel only and the boost was off. The guitar is a historic 335 with 57' Classics (alnico 2 magnets). The guitar has a lot of bottom end so the amp settings kinda reflect that. What I think is more important is that you can dial in the feel and gain of various era marshalls.
Van Halen toneTMB ChannelBass - 0
Mids - 9
Treble - 8
Volume - 8
Master V - 11

Boost - On
Normal ChannelTone - 9
Volume - 7
Both channels are linked together. Plug the guitar in the upper input on the TMB channel and plug a patch cord into the lower input on the TMP channel. Then plug the other end into the upper input on the Normal channel. If you do not have boost on your amp just turn up the volume on the normal channel to max. This sound really demands a cab with one or more greenbacks. This tone also works well with the bomb. I used a Les Paul for this tone.
more to come later......