Equivalence table
ElectronTubeStore.com
6AU4 Audio Tubes - www.thetubestore.com
VinylSavor: Tube of the Month : The 6AU4
22 Us-made 6AU4 6AU4GTA Vacuum Tubes Valves NOS NIB Lot of - Etsy Israel
VinylSavor: Tube of the Month : The 6AU4
Nostalgia Air: Tube Substitution for 6AX4GT
Tube type list
Tube type list
VinylSavor: Tube of the Month : The 6AU4
TDSL Tube data [6AU4-GT]
6AU4GTA @ The Valve Museum
Tube type list
Equivalence table
List of vacuum tubes - Wikiwand
Tube & Information Page
Tube Data For HEATHKIT TT-1A Tube Tester
6AU4, Tube 6AU4; Röhre 6AU4 ID18666, Damper, booster, flybac
Vacuum Tube Manual: RCA RC-20 1960
Untitled
Oldtube-PriceList
SM5CBW - Tubedata
