John Gardner wrote: > Thinking about it - 450V... Class A? > > Edson, I suspect you're melting the 6L6s... Just a hunch. He said 450V at 45mA. That comes out to 20W. I don't remember the specs on a 6L6, but it's not obvious to me off the top of my head that this is out of line. From their size and remember how hot they got in normal operation, 20W sounds normal at first glance. ******************************************************************** Embed Inc, Littleton Massachusetts, http://www.embedinc.com/products (978) 742-9014. Gold level PIC consultants since 2000. -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist