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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6AL5 - GE Twin Diode High-Perveance 7-Pin Vintage Miniature Vacuum Tube NOS w/Box CK6663

6AL5 - GE Twin Diode High-Perveance 7-Pin Vintage Miniature Vacuum Tube NOS w/Box CK6663

GE 6AL5  Twin Diode The GE 6AL5 / CK6663  is a 7-pin miniature Twin Diode high-pervea..

$7.50

6AL5 - Raytheon Twin Diode High-Perveance 7-Pin Vintage Miniature Vacuum Tube NOS w/Box CK6663

6AL5 - Raytheon Twin Diode High-Perveance 7-Pin Vintage Miniature Vacuum Tube NOS w/Box CK6663

Raytheon 6AL5  Twin Diode The Raytheon 6AL5 / CK6663  is a 7-pin miniature Twin Diode..

$9.00

6AS5 - GE Beam Power Pentode 7-Pin Vintage Miniature Vacuum Tube NOS w/Box

6AS5 - GE Beam Power Pentode 7-Pin Vintage Miniature Vacuum Tube NOS w/Box

GE 6AS5  Beam Power Pentode The GE 6AS5  is a 7-pin miniature Beam Power Pentode Tube..

$9.00

6AS6 - GE Sharp Cut-Off Pentode 7-Pin Vintage Miniature Vacuum Tube NOS w/Box

6AS6 - GE Sharp Cut-Off Pentode 7-Pin Vintage Miniature Vacuum Tube NOS w/Box

GE 6AS6  Sharp Cut-Off Pentode The GE 6AS6  is a 7-pin miniature sharp-cut-off pentod..

$4.50

6AS11  - GE Compactron Dual Triode Sharp-Cutoff Pentode Duodecar 12-Pin Vintage Vacuum Tube NOS w/Box

6AS11 - GE Compactron Dual Triode Sharp-Cutoff Pentode Duodecar 12-Pin Vintage Vacuum Tube NOS w/Box

GE 6AS11  Compactron  Triode Pentode The GE 6AS11  is a 12-pin compactron contai..

$9.00

6AT6 - GE Duplex-Diode High-Mu Triode 7-Pin Vintage Miniature Vacuum Tube NOS w/Box

6AT6 - GE Duplex-Diode High-Mu Triode 7-Pin Vintage Miniature Vacuum Tube NOS w/Box

GE 6AT6  Duplex-Diode High-Mu Triode The GE 6AT6  is a 7-pin miniature duplex-diode, ..

$7.50

6AV6  -  GE Duplex-Diode High-Mu Triode 7-Pin Vintage Miniature Vacuum Tube in Box NOS

6AV6 - GE Duplex-Diode High-Mu Triode 7-Pin Vintage Miniature Vacuum Tube in Box NOS

GE 6AV6  High-Mu Triode The General Electric 6AV6  7 pin miniature duplex-diode, high-..

$7.50

6AV11  - GE Compactron Three Triode 12-Pin Vintage Miniature Vacuum Tube NOS w/Box

6AV11 - GE Compactron Three Triode 12-Pin Vintage Miniature Vacuum Tube NOS w/Box

GE 6AV11  Compactron Three Triode The GE 6AV11  is a 12-pin is a compactron containin..

$39.00

6AW8A - GE High-Mu Triode Sharp-Cutoff Pentode 9-Pin Vintage Miniature Vacuum Tube NOS w/Box

6AW8A - GE High-Mu Triode Sharp-Cutoff Pentode 9-Pin Vintage Miniature Vacuum Tube NOS w/Box

GE 6AW8A   Triode Pentode The GE 6AW8A  is a 9-pin miniature high-mu triode and ..

$9.00

6AW8A - SYLVANIA High-Mu Triode Sharp-Cutoff Pentode 9-Pin Vintage Miniature Vacuum Tube NOS w/Box

6AW8A - SYLVANIA High-Mu Triode Sharp-Cutoff Pentode 9-Pin Vintage Miniature Vacuum Tube NOS w/Box

SYLVANIA 6AW8A   Triode Pentode The SYLVANIA 6AW8A  is a 9-pin miniature high-mu..

$9.00

6AZ8 - RCA Medium-Mu Triode Sharp Cutoff Pentode 9-Pin Vintage Miniature Vacuum Tube NOS w/Box

6AZ8 - RCA Medium-Mu Triode Sharp Cutoff Pentode 9-Pin Vintage Miniature Vacuum Tube NOS w/Box

RCA 6AZ8   Triode Pentode The RCA 6AZ8  is a 9-pin miniature Medium-Mu Triode Sh..

$7.50

6AZ8 - SYLVANIA Medium-Mu Triode Sharp Cutoff Pentode 9-Pin Vintage Miniature Vacuum Tube NOS w/Box

6AZ8 - SYLVANIA Medium-Mu Triode Sharp Cutoff Pentode 9-Pin Vintage Miniature Vacuum Tube NOS w/Box

SYLVANIA 6AZ8   Triode Pentode The SYLVANIA 6AZ8  is a 9-pin miniature Medium-Mu..

$7.50

6BA6 - National Remote-Cutoff Pentode 7-Pin Vintage Miniature Vacuum Tube NOS w/Box

6BA6 - National Remote-Cutoff Pentode 7-Pin Vintage Miniature Vacuum Tube NOS w/Box

National 6BA6  Remote-Cut Pentode The National 6BA6  is a 7-pin miniature Remote-Cuto..

$7.50

6BE6  - Browning Laboratories Heptode Pentagrid 7-Pin Vintage Miniature Vacuum Tube NOS

6BE6 - Browning Laboratories Heptode Pentagrid 7-Pin Vintage Miniature Vacuum Tube NOS

Browning 6BE6   Heptode Pentagrid The Browning 6BE6  Manufactured for and used ex..

$19.00

6BE6  - National Heptode Pentagrid 7-Pin Vintage Miniature Vacuum Tube NOS

6BE6 - National Heptode Pentagrid 7-Pin Vintage Miniature Vacuum Tube NOS

National 6BE6   Heptode Pentagrid The National 6BE6  is a miniature heptode prima..

$7.50

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