Would it be redundant to buy the marshall (c5 head) if i already have the gibson amp. Specifically im interested in the marshall bc its a head and can be run through a cab. Im interested in a larger sound at lower volumes. Would it be different/unique enough not to warrant a modification to the GA-5 *(oops). (no speaker out jack) in order to run through my cab (2x12 closed back w/tone tubs) just for fun?