My friend was asked me a question and confused me.
He told somehitng like this: "Cabs is only your monitoring on stage (and he is right) , so if I got in ear monitors do I need full stack? Or just one cab?"
So how do you thing about it?
I thing that is he have in ear monitoring so he is don't need second cab, I men it would be great to have another one, but it's not necessarily.
Well, it depends, but probably.
ANY sort of monitors, be they in-ear monitors or floor "wedge" monitors will work provided the guitar is in the monitor mix. If you're micing up, coming through the mains at an appropriate level (i.e - the sound guy isn't relying on the volume coming from your amp on stage to fill out the guitars a bit in his mix), and you can hear yourself well enough in the monitors, then it doesn't matter whether or not you can hear your cab since you can hear yourself and the audience can hear you just fine.
That said, really the only reason you'd need a full stack with two 4x12's versus a half stack with a single 4x12 is looks. Any pro-quality head driving a pro-quality 4x12 will most likely put out a scary amount of volume, and I can't think of any playing situation where the difference between hearing yourself and not hearing yourself would be an extra 4x12.
Except, maybe, accompanying a Boing 777 on the runway.