Rx8man - Hello - your comment about "special tubes" caught my attention, as I have been wanting to try another set in my M34 dsm, purchased here used a couple years ago. We will be moving shortly; so, while the system is taken down, I thought it would be the opportune time to install new tubes, since I have no idea about the previous history of the stock unit. Also, my owner's manual apparently is missing the "tube placement diagram" page. I've never purchased a tube in my life, but figured I would contact Andy at Vintage Tube after reading about him here on the forum, and then at his website. Would you be willing to share your "special" ingredients.
Thanks very much for any suggestions you might care to provide.
Best regards,
Tom