1. An implantable medical device comprising in combination: (a) a first regulator module capable of providing a first therapy program; (b) a second regulator module capable of providing a second therapy program independent of the first therapy program; (c) a plurality of electrodes coupled to deliver one or more therapy programs; (d) a switching unit for dynamically coupling the first regulator module to at least a first electrode within the plurality of electrodes and the second regulator module to at least a second electrode within the plurality of electrodes; and (e) a waveform controller configured to independently deliver the first and second therapy programs to a patient.