Sure, just use morphing to boost or subtract, alternatively you can get an expression pedal to assign via morphing to whatever you want.
but does it control the MASTER volume? I know you can add an expression in the profile.. I was looking for a global way... And I know I'll need an expression pedal... just want to know if you can control the ACTUAL MASTER volume
Yes, when you connect a volume pedal to the Kemper's Remote...you can assign it to control whatever output you want (for example, the Monitor Out volume level).
You can also choose in the chain where you want to put it, pre/post stomps, amp etc... This way you can control, along with volume, whether it effects the gain, delay tail off etc... Its all good stuff!
I think you cant control the master volume of the whole kpa with a pedal, but you control the master volume of every rig with an expression pedal assigned as a volume pedal. Thats the difference.
