I'm in the process of purchasing a SWR SM900 head , and I just bought a Trace Elliot AH1000-12 head (should arrive in a few days). I know two heads may be overkill , but I live in the Northwoods of Wisconsin and if my main head needs to be repaired it could take a while to get it fixed and get it back. I'm not sure which one is going to be my main head yet until I get to try them out and see which one gives me the tone that I'm looking for. I'm trading in my Genz Benz GBE1200 because I just could never find the sound that I was looking for with that head. Don't get me wrong - it's a good head and it's loud as heck , but it just wasn't what I was looking for. If any of you have any expereince using a SM900 and / or a AH1000-12 amp head , I'd appreciate your opinion on what you think of them. Thanks , Pedull-Player