It is an article about rejuvenating tubes that have been i storage for a long time, which in itself may be a problem due to gas contamination. NOS is just not always sheer happiness.......
Morgan Jones is a british, mostly highly acclaimed "authority" in tube amp design, mostly for HiFi. Read carefully,- proceed at your own risk........
http://www.vacuumstate.com/fileupload/B ... %20pix.pdf
