Thanks George, everyone that speaks of them say they are a spectacular power tube...when they work. Unfortunate you got burnt but I suppose at least they didn't take out your amplifier. The EAT PDF on the tube manufacturing process is pretty cool & I would splash if I knew they were as reliable as the Gold Lions are in the MC2301. Even though the Mac has Power Sentry circuits, tubes have still be known to take out an amp.
http://www.euroaudioteam.com/c2/downloads/eat-factory-tour-d0029.pdf
http://www.euroaudioteam.com/c2/downloads/eat-factory-tour-d0029.pdf