Just got my new amp last week, I played around with a couple of different heads and cabinets combinations and decided on this rig. I choose SWR WorkingPro 400 head with a Hartke VX410 Cab, ok nothing special compared to all you Ampeg fans but i feel in love with the tone. It matched my bass really well. But im a little confused with the Speaker outputs, its got 4 parallel ports. 2 Standard 1/4 jacks and these weird round ones which SWR call Speakon. Are they for SWR cabs only or can you buy em for other brand cabs with an adapter. Also are the Standard 1/4 outputs 4 ohms or 8 ohms? Sorry for the questions but this is my first stack, some pictures just for show.