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Tube Database (1,270 tubes)

Other (7066), Pre (189), Power (67), Rectifier (19)
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300B
Branded Usr

Round Tip

Base
Black
Bottle Height
Tall Bottle
Bottle Shape
Coke Bottle
Country
Japan
Getter
Bottom Getter
Glass Color
Clear Glass
Mica
Double
Permanentid
epfkdfs9
Pin Color
Silver
Plate Color
Black Carbon
Tip Shape
Round Tip
USR 300B tube photoUSR 300B tube photoUSR 300B tube photo