Hello, just joined and hoping to learn, maybe contribute. Even I am in US, English is not my first language so sometimes I may not be best at communicating. That being said, now about me, I have EE degree but in electrical devices, more like electronic drives, control, typical industrial stuff. I was working as electronic engineer /designer, developing power supplies and protection circuits but have no experience in audio and zero knowledge of tubes. I have basic test equipment (scopes, bench power supplies, multimeters) can read schematics so I should be able to participate in discussion. I am looking to dive deep and start tube amplifier build, will post in proper forum soon.