I have an ampeg pf500 going into either a GK MB 115 cab or Warwick 4 x10 and i must say that although the GK is loud enough, just, in a loud rock band, the bass is much deeper and,to my ears, 'better' with the Warwick, which you would probably expect, but i really don't rate the tone of the GK,personally. It's good for upstairs rehearsals though.....!!!