I've seen Rush, Jeff Beck, and Dream Theater. You have to be a God-tier drummer to play with Rush or Beck. Portnoy couldn't even cut it for Avenged Sevenfold. He's a great player, but he's no Peart, Bozzio, or Colaiuta.
Never made it all the way through the last three albums. The modern production where the bass and drums sound programmed kind of ruin it for me. Growing up listening to guys like Lee Kerslake and Randy Castillo make it a real letdown listening to drums an idiot like me could program in 5 minutes...
Just more BS. People have used LEDs in circuits for years. There's no secret occult hidden knowledge in tube amps. Everyone has the same ingredients to chose from for their personal recipe.
https://www.rig-talk.com/forum/forums/cameron-amplification.25/
Most of the story is here if you want to dig through it. Mark worked for Fryette and Bogner before he started his own company. I don't think he's on good terms with Fryette (based on posts at the old fryette users forum), not sure...