Designed to be used as an audio amplifier tube New old stock * New In Box * No longer available for export. MFR: General Electric Company SKU: 6189/12AU7WA-JHS-GE
High voltage pulse amplifier or shunt regulator. 4W power dissipation, 2,2KV max anode voltage. New Old Stock * New In Box * No longer available for export MFR: GE SKU: 7239
Designed to function as a photodetector tube in relay systems where very high light sensitivity is needed. New old stock * No longer available for export. MFR: RCA SKU: 931A-RCA
Designed to function as a red and infrared radiation detector in sound reproduction applications New old stock * No longer available for export MFR: CBS SKU: 1P31-CBS