SE GU50 tube build - Talkin' Tubes - The Klipsch Audio Community
GU50
GU-50 (LS50) - One other tube that can be add to the "Usable Tubes" list ?
Röhren-Verstärker mit der LS 50 (GU 50)
GU50 SE vs 300B SE tube amp?? | diyAudio
Gu50 Amp | PDF
Gegentakt-Verstärker in AB-Betrieb fuer GU 50
Donaupeter - GU50
GU50 single end
Weiliang Audio Gu50 Ry50 Tube Amplifier Single Ended Class A Valve Amplifier 8w Stereo Amplifier Bluetooth In Sound Alike 300b - Home Theater Amplifiers - AliExpress
Gu-50 in Triode Mode substituted for a 300b in this SE Schematic : r/diytubes