Hey! I just bought an old Genz Benz GB412SL on Craigslist. I'm not real experienced with heads / cabinets so I need a little help here. The cabinet has a small sticker that is marked 8 ohms and 2 unmarked Jack's. I ohmed them out and each one is 4 ohms. So I'm guessing this is stereo? Each jack drives 2 speakers I assume. There is no mono input as far as I can tell. This being the case why is it marked 8 ohms?? Can I safely drive the amp with the two 4 ohm outputs from my head? I dont want to damage my head, any advice is much appreciated!!