New Old Stock 7058 Vacuum Tube (Item: RDW-418)

New old stock 7058 high-mu twin triode-various brands. This is essentially a 12AX7 with extended filament voltage range. PLEASE NOTE: The data sheet for the 7058 indicates no connection to pin 9 unlike a 12AX7 which has a filament center-tap at pin 9. HOWEVER, all of the 7058s we are selling DO HAVE a filament center tap tied to pin 9. Tested on Hickok AN/USM-118B or 539C tube tester. Limited quantity available.