12AU7A

12AU7A, ECC82

Ge

Branded Motorola

12AU7A

Hitachi

Branded Marconi Radiotron

12AU7A

Hitachi

Branded Channel Master

12AU7A, ECC82

Matsushita

Branded Lindal

12AU7A

Mazda

Branded Ge

12AU7A

Mullard

Branded Rogers

12AX7, I63

Mullard

Branded Hammond

PHILIPS, ECC83, I63

Mullard

12AX7A, ECC83, I63

Mullard

Branded RCA

ECC83, 12AX7, I63

Mullard

Branded The Fisher

ECC83, 12AX7, I63

Mullard

Branded Telefunken

12AU7A, I63

Philips

Branded Rogers

ECC83, B339, I63

Philips

Branded Marconi

12AU7A

RCA

Branded Superior

12AU7A

RFT

Branded Electronic Enterprises

ECC83, 12AX7, I63

Branded Mullard

12AU7A

Branded Toshiba

12AU7A

Branded General Electric

12AU7A

Branded Heintz & Kaufman

12AU7A

Branded Arcturus

12AU7A

Branded Raytheon

12AU7A, ECC82

Branded RCA

12AU7A, ECC82

Branded Mazda

ECC83, 12AX7, I63

Branded Mullard