I purchased a set of JJ power tubes from them (Euro) several years back and put them in my 6505+. Unfortunately one of the tubes was bad and I ended up blowing a screen resister(s), or so I was told by the amp tech. He also told me the brand new JJ's that I had just purchased were "burned out" and that he was going to charge me for a new set of power tubes on top of the replacement of the resistors. $300+ and 2 months later I had a working 6505+ again. Call me superstitious but I never purchased tubes from them again.