VACUUM TUBES

VACUUM TUBES

A vacuum tube consists of two or more electrodes in a vacuum inside an airtight envelope. Most tubes have glass envelopes with a glass-to-metal seal based on kovar sealable borosilicate glasses, though ceramic and metal envelopes (atop insulating bases) have been used. The electrodes are attached to leads which pass through the envelope via an airtight seal.

Most vacuum tubes have a limited lifetime, due to the filament or heater burning out or other failure modes, so they are made as replaceable units; the electrode leads connect to pins on the tube's base which plug into a tube socket. The tubes in this section are NOS (new old stock) from the 1980s and 1990s and are mostly brand new. Those that are used will be noted as such and have been tested as "GOOD" on a tube tester.

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12AU6  -  GE Sharp Cutoff Pentode 7-Pin Vintage Miniature Vacuum Tube in Box NOS

12AU6 - GE Sharp Cutoff Pentode 7-Pin Vintage Miniature Vacuum Tube in Box NOS

GE 12AU6  Sharp Cutoff Pentode The General Electric 12AU6  is a 7 pin miniature type u..

$6.00

12AU7  -  Browning Laboratories Twin Triode Amp ECC82 9-Pin Vintage Miniature Vacuum Tube NOS

12AU7 - Browning Laboratories Twin Triode Amp ECC82 9-Pin Vintage Miniature Vacuum Tube NOS

Browning  12AU7 (ECC82) Twin Triode The Browning 12AU7 (ECC82) Manufactured for and used e..

$45.00

12AU7A  -  Amperex Twin Triode Amp ECC82 9-Pin Vintage Miniature Vacuum Tube NOS

12AU7A - Amperex Twin Triode Amp ECC82 9-Pin Vintage Miniature Vacuum Tube NOS

Amperex  12AU7A (ECC82) Twin Triode The Amperex 12AU7A (ECC82) is a 9 pin miniature type u..

$55.00

12AU7A  -  Browning Laboratories Twin Triode Amp ECC82 9-Pin Vintage Miniature Vacuum Tube NOS

12AU7A - Browning Laboratories Twin Triode Amp ECC82 9-Pin Vintage Miniature Vacuum Tube NOS

Browning  12AU7A (ECC82) Twin Triode The Browning 12AU7A (ECC82) Manufactured for and used..

$55.00

12AU7A  -  Browning Laboratories Twin Triode Amp ECC82 9-Pin Vintage Vacuum Tube PRE-OWNED

12AU7A - Browning Laboratories Twin Triode Amp ECC82 9-Pin Vintage Vacuum Tube PRE-OWNED

Browning  12AU7A (ECC82) Twin Triode The Browning 12AU7A (ECC82) Manufactured for and used..

$19.00

12AU7A  -  GE Twin Triode Amp ECC82 9-Pin Vintage Vacuum Tube PRE-OWNED

12AU7A - GE Twin Triode Amp ECC82 9-Pin Vintage Vacuum Tube PRE-OWNED

GE  12AU7A (ECC82) Twin Triode The General Electric 12AU7A (ECC82) is a 9 pin miniature ty..

$9.00

12AU7A  -  SYLVANIA Twin Triode Amp ECC82 9-Pin Vintage Miniature Vacuum Tube NOS

12AU7A - SYLVANIA Twin Triode Amp ECC82 9-Pin Vintage Miniature Vacuum Tube NOS

SYLVANIA  12AU7A (ECC82) Twin Triode The SYLVANIA 12AU7A (ECC82) is a 9 pin miniature type..

$19.00

12AV6  -  GE Duplex-Diode High-Mu Triode 7-Pin Vintage Miniature Vacuum Tube in Box NOS

12AV6 - GE Duplex-Diode High-Mu Triode 7-Pin Vintage Miniature Vacuum Tube in Box NOS

GE 12AV6  High-Mu Triode The General Electric 12AV6  7 pin miniature duplex-diode, hig..

$9.00

12AX7A  -  Browning Laboratories Twin Triode Amp ECC83 9-Pin Vintage Miniature Vacuum Tube NOS

12AX7A - Browning Laboratories Twin Triode Amp ECC83 9-Pin Vintage Miniature Vacuum Tube NOS

Browning  12AX7A (ECC83) Twin Triode The Browning 12AX7A (ECC83)Manufactured for and used e..

$129.00

12AX7A  -  Browning Laboratories Twin Triode Amp ECC83 9-Pin Vintage Vacuum Tube PRE-OWNED

12AX7A - Browning Laboratories Twin Triode Amp ECC83 9-Pin Vintage Vacuum Tube PRE-OWNED

Browning  12AX7A (ECC83) Twin Triode The Browning 12AX7A (ECC83)Manufactured for and used e..

$29.00

12AX7A  -  SYLVANIA Twin Triode Amp ECC83 7025 9-Pin Vintage Miniature Vacuum Tube NOS w/Box

12AX7A - SYLVANIA Twin Triode Amp ECC83 7025 9-Pin Vintage Miniature Vacuum Tube NOS w/Box

SYLVANIA 12AX7A (ECC83) Twin Triode The SYLVANIA 12AX7A (ECC83)is a 9 pin miniature type high-mu..

$49.00

12AX7A  -  Twin Triode Amp ECC83 9-Pin Vintage Miniature Vacuum Tube PRE-OWNED

12AX7A - Twin Triode Amp ECC83 9-Pin Vintage Miniature Vacuum Tube PRE-OWNED

12AX7A (ECC83) Twin Triode Pre-Owned The 12AX7A (ECC83)is a 9 pin miniature type high-mu twin tr..

$9.00

12B4A - GE Low-Mu Triode 9-Pin Vintage Miniature Vacuum Tube NOS w/Box

12B4A - GE Low-Mu Triode 9-Pin Vintage Miniature Vacuum Tube NOS w/Box

GE 12B4A  Low-Mu Triode The GE 12B4A  is a 9-pin miniature Low-Mu Triode and is used ..

$9.00

12BA6 - Phillips-ECG Remote-Cutoff Pentode 7-Pin Vintage Miniature Vacuum Tube NOS w/Box

12BA6 - Phillips-ECG Remote-Cutoff Pentode 7-Pin Vintage Miniature Vacuum Tube NOS w/Box

Phillips-ECG 12BA6  Remote-Cut Pentode The Phillips-ECG 12BA6  is a 7-pin miniature R..

$7.50

12BE6  -  RCA Heptode Pentagrid 7-Pin Vintage Miniature Vacuum Tube NOS

12BE6 - RCA Heptode Pentagrid 7-Pin Vintage Miniature Vacuum Tube NOS

RCA 12BE6   Heptode Pentagrid The RCA 12BE6  is a miniature heptode primarily des..

$9.00

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