I finally found a store that carried Genz Benz amps. I have to say I was very impressed with the sound of their amps as well as the full sound I heard even through just one 12 cabinet. Much fuller that the Aguilar SL cabinet. Tone of the Shuttle and Streamliner offer a clean full sound with an even amount of highs, mids, and lows. The amps have a little smoother sound compared to the Mesa Boogie Carbine amps that I like. Needless to say I prefer the GB over the Boogie which has a little high fi sound. Cabinets are well made and the controls for EQ was nice. The amps sounded so good, I just needed to add just a touch of Eq from their flat setting. Compared to my Tone Hammer 500, the GB has a little cleaner smooth sounding while the TH has a rich mid character to it. In think the tubes in the GB help with the smooth sound. Aguilar was smart in adding a rich sound without tubes which helps their amps not to have a sterile or harsh sound. Personally I would love to own both as they are now my favorite bass amps.