Edit: I haven't seen a PJB club thread, so this is as good a time as any. I know based on the serial number from my M-500 there aren't millions of us out there, but if anyone wants a number lets do this! I have been a self described ambassodor for Phil Jones Bass for over a year now. I purchased the M-500 head, 8T cab and 16T cab, sight unseen, sound unheard. I bought it based on reputation from feedback here on TalkBass and to Phil Jones himself, as well as one of his dealers, Gary Rosen of Guitar X. This combination has been used EXTENSIVELY at least ten hours per week since I got it. It has not been punished, but it has been pushed. Tom Bowlus' review in Bass Gear Magazine, and private emails from Tom himself solidified what other PJB users had been telling me. TURN IT UP! The amp can take it, and even more. It was time for a little maintenance, I like to take care of things that cost more than, say for instance, my personal vehicle. I contacted my dealer who referred me to the man himself. Phil Jones was in contact with me (on a holiday weekend no less) and personally handled the transaction for me. He also made it clear if there were any issues I had, he would take care of them, if I had any questions or inquiries about any of his product line he would be happy to take care of me. In short, he stands behind what he sells. Period. In an age where customer service and product support are misnomers, the extraordinary response and communication are deeply appreciated. I should mention that I am not a paid endorser nor have any other connection to Phil Jones Pure Sound other than my appreciation for his creations. I just believe that in a forum where negative things get a lot of attention, I feel we should celebrate a company that is doing it right! I was already, but I am even more committed to being a Phil Jones player for life!