Sinotronics Co., Ltd. [China]

audio tube, we can show with the specifications for construction,filament voltage,filament corrent,out power,D.C.plate voltage,

audio tube, we can show with the specifications for construction,filament voltage,filament corrent,out power,D.C.plate voltage, D.C. screen voltage D.C. grid voltage D.C.plate corrent DC screen current and so on

audio vacuum tube