211 LINLAI Vacuum Tube Replace Shuguang 845 Factory Test and Match - AliExpress
Sky is...was falling - tube shortage predictions | Gretsch-Talk Forum
6moons audioreviews: Yamamoto A-09S - Sidebar II
The Global Supply of Vacuum Tubes: What Happens Now? – PS Audio
Update Regarding the Supply of Amplifier Tubes from Tube Amp Doctor | audioXpress
Rumors that the Shuguang tube factory in China has either moved or closed. Jamona working at full capacity to pick up slack. I know but everyone uses Chinese tubes, and many are
Update Regarding the Supply of Amplifier Tubes from Tube Amp Doctor | audioXpress
211 LINLAI Vacuum Tube Replace Shuguang 845 Factory Test and Match - AliExpress