12AX7A

ECC83, 12AX7A

Telefunken

Branded Lafayette

12AX7A, ECC83

Telefunken

Branded MazdaBelvu

12AX7A

Telefunken

Branded Mazda

12AX7A, ECC83

Telefunken

Branded Belvu

12AX7A

Branded Hit-RayHitachi

12AX7A

Branded Tung-Sol

12AX7A

Branded CEI

12AX7A, ECC83

Branded National

12AX7A, 7025

Branded Bell & Howell

12AX7A

Branded Mullard

12AX7A

Branded United Electron

B339, ECC83, I61

Branded G.E.C.

12AX7A

Branded Mazda

12AX7A

Branded RCA

ECC83, B339, I61

Branded Marconi

12AX7A, ECC83

Branded Eico

12AX7A

Branded Raytheon

ECC83, 12AX7A

Branded IttLtt

12AX7A

Branded Silvertone

12AX7A, ECC83

Branded Belvu

12AX7A, ECC83

Branded National

12AX7A, 7025

Branded Magnavox

12AX7A

Branded Lafayette

12AX7A, ECC83, 7025

Branded Sylvania