There is a Kingsley Constable available locally where I live. Does anybody here have experience using it with CAB m. I know it's supposed to be a preamp section of a Plexi and as that it is meant to be pretty clean drive the power tubes into saturation, so how much gain does it have on it's own? If I drive it hard, will it overload the input of CAB m? I know I could always push it with pedals in front, but that's not the point. Any input would be appreciated before I pull the trigger.