So I found a great deal on this combo ($499 new! ). I was orginaly looking at this amp as a candiate for an amp for my two ampeg portabass 1x12's. It is slightly out of my price range, but not imposible. This seems like a good deal, but I have some questions. 1. If I were to remove the 1001RB-II would that void the warrentee? 2. Has the reliabilty on these newer amps been improved? Tone wise, when I was messing with it seemed to be promising. So should I?