... Tube Audio Tube ,Electron Tube,Electrical Products,12AT7(ECC81/6201 GT-12AT7)Type: Audio Tube ,Electron Tube,Electrical Products,12AT7(ECC81 ... /6201 GT-12AT7)Cathod & Filament:Cathod Type: OxideVoltage(V): 6.3(12 ... Small PinsISO 9001:2008 Certificate Audio Tube 12AT7(ECC81/6201/GT-12AT7)