I know there are not many of us on here, but curious if anyone has rolled the tube in theirs with good results. I had gotten this info from Boris and Zoran at Sonic Farm and am considering trying the JJ, but thought i'd put it out there in case anyone else has some first hand experience with which tubes work best for electric bass. from SF: When we were designing the Berliner (a different circuit), we also had a pair of current production JJ EF-806's and thought they sounded great, maybe a bit wider and deeper than the 6J32P. But their price didn't justify switching over to them for production. However for you it may be worth giving it a try.