Difference in ROV Series 1,2 &3?

[Bottomdweller]

Just wondering what the differences are...I have a Series 1, and when did they change? Thanks!

 

[MesaDCLP]

I believe the difference between 1 and 2 are as follows:

A third mode on channel 2 - Raw
Reverb knobs are on the front of the amp
Solo knob on front
3 button footswitch (channel, reverb, solo)
edit - oh yeah, Bias select switching between 6L6's and EL34's

Is there a series 3?!!