12AX7

ECC83, 12AX7, MC0

Siemens

Branded Tungsram

12AX7

Sylvania

Branded Rad-Tel

12AX7

Sylvania

Branded Zenith

12AX7

Sylvania

Branded Setchell Carlson

12AX7

Telefunken

Branded Gap / R Computo

ECC83, 12AX7

Telefunken

Branded The Fisher

12AX7, ECC83

Telefunken

Branded Sonotone

12AX7

Telefunken

Branded Leeds & Northrup

12AX7, ECC83

Toshiba

Branded Raytheon

12AX7

Tung-Sol

Branded Motorola

ECC83, 12AX7, MC1

Valvo

Branded Amperex

12AX7

Westinghouse

Branded Conn

12AX7

Branded RCA

12AX7, I65

Branded Electrohome

12AX7

Branded Heintz & KaufmanGammatron

12AX7

Branded Ge

12AX7

Branded General Electric

ECC83, 12AX7, I63

Branded Mullard

12AX7

Branded Shield

12AX7

Branded NU

ECC83, 12AX7, MC5

Branded Amperex

12AX7

Branded Realistic

B339

Branded Haltron

12AX7

Branded Silvertone