This is not only a review of the club 40 but also a testament to Greg Germino and how he runs his business. I have had my new Club 40 for a few weeks now but have been waiting to write a review, I hate honeymoon reviews. When I first got this amp I was disappointed, that is the truth. The bottom line was that there was simply too much bass. To me the amp sounded dark and made my Heritage G12Ms flub out, I had never experienced this before with my Masonette or Route 66. I am using a 2X12 in either semi-open or closed, currently closed. I A/Bed the amp with the Masonette and that further solidified my first impression, because for me the Masonette is the sheet. After taking the amp to rehearsal I experienced the same thing, just too much bass. **Note** I am playing an R4 and R7 both with 11s tuned down a whole step, this did not help the situation at all! So, after giving the amp a fair shake both at home and with the band I called Greg and told him flat out that I did not love the amp. I liked it, and I loved the raw clear tone it had but wasnt completely in love with the amp. After listening for a while Greg offered a few options for me to try. One was the bright cap mod, another was to send me different value coupling caps for the bass output, as well as a bypass cap for something. Greg sent those parts out in the mail that day and I had them by the end of the week. Greg also mentioned a few other options if this did not work out. All I can say is that Greg will do whatever it takes to make you happy, that was the level of service I experienced from him and have in the past. He is a rare find! **Note** I am no amp tech so my tech lingo is lame at best. I will ask HeeBGB to chime in here and help out since he performed the mods and is amp tech savy. Greg (HeeBGB) and I spent that Friday tuning the amp. I played and he hooked up both sets of caps with alligator clips, this way we were able to switch back and forth between both values, for both sets of caps. In the end I went with the bright cap and the newer coupling caps. The volume bright cap was a huge improvement and that alone would have been enough, the coupling caps were subtle but helped clear up a little more mud in the very low midrange that I was hearing. Once that was done we put in some NOS glass, Siemens EL-34s and various other goodies. I can now say that this is THE amp in my collection. It retained that raw clear tone that I initially loved and now it is voiced much more to my liking. A bit more gain, a lot less bass and a midrange that is world class. The clean/semi-clean tone of this amp is astounding. I have never played an amp that has had such a clear direct woody tone. It simply gets out of the way of the guitar and lets it shine through. I A/Bed this and the Masonette again after the tweaking was done and I preferred the Club-40 quite a bit more then the Masonette. With either the R4 or R7 the Club-40 just shines, the additional horsepower is nice to have too. It certainly helps cut through band racket. So, in short I will again reiterate what has been said many times before. Greg Germino is the bees knees, as are his amps. I was convinced I would be sending this amp back for a different model initially and one call to Greg solved that. It is amazing what a few simple parts can do and how tunable these amps are, Im sure KLB will tell you all that. I wish I had some sound clips for you all. Steve..