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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6EJ7 - Amperex Sharp Cutoff Pentode 9-Pin Vintage Miniature Vacuum Tube (EF184) PRE-OWNED

6EJ7 - Amperex Sharp Cutoff Pentode 9-Pin Vintage Miniature Vacuum Tube (EF184) PRE-OWNED

Amperex 6EJ7  Sharp Cutoff Pentode The Amperex 6EJ7  is a 9-pin miniature high transc..

$4.50

6EJ7 - GE Sharp Cutoff Pentode 9-Pin Vintage Miniature Vacuum Tube (EF184) NOS w/Box

6EJ7 - GE Sharp Cutoff Pentode 9-Pin Vintage Miniature Vacuum Tube (EF184) NOS w/Box

GE 6EJ7  Sharp Cutoff Pentode The GE 6EJ7  is a 9-pin miniature high transconductance..

$9.00

6EL4A/6BK4C  - GE Beam Triode 8-Pin Octal Vintage Vacuum Tube NOS w/Box

6EL4A/6BK4C - GE Beam Triode 8-Pin Octal Vintage Vacuum Tube NOS w/Box

GE 6EL4A  Beam Triode The GE 6EL4A/6BK4C  is a Glass octal type used for the voltage ..

$9.00

6EM5 - RCA Beam Powered Pentode 9-Pin Vintage Miniature Vacuum Tube NOS w/Box

6EM5 - RCA Beam Powered Pentode 9-Pin Vintage Miniature Vacuum Tube NOS w/Box

RCA 6EM5  Beam Powered Pentode The RCA 6EM5  is a 9-pin miniature beam powered pentod..

$9.00

6EU7  - SYLVANIA High-Mu Twin Triode 9-Pin Vintage Miniature Vacuum Tube NOS w/Box

6EU7 - SYLVANIA High-Mu Twin Triode 9-Pin Vintage Miniature Vacuum Tube NOS w/Box

SYLVANIA 6EU7  High-Mu Twin Triode The SYLVANIA 6EU7  is a 9-pin Miniature type used ..

$19.00

6EV7 - International High-Mu Twin Triode 9-Pin Vintage Miniature Vacuum Tube NOS w/Box

6EV7 - International High-Mu Twin Triode 9-Pin Vintage Miniature Vacuum Tube NOS w/Box

International 6EV7  Twin Triode The International 6EV7  is a 9-pin miniature high-mu ..

$19.00

6EW6  - RCA Sharp-Cutoff Pentode 7-Pin Vintage Miniature Vacuum Tube NOS w/Box

6EW6 - RCA Sharp-Cutoff Pentode 7-Pin Vintage Miniature Vacuum Tube NOS w/Box

RCA 6EW6  Sharp-Cutoff Pentode The RCA 6EW6  is a miniature, sharp-cutoff pentode des..

$9.00

6FD7 - SYLVANIA High-Mu Low-Mu Triode Dual Triode 9-Pin Vintage Miniature Vacuum Tube NOS w/Box

6FD7 - SYLVANIA High-Mu Low-Mu Triode Dual Triode 9-Pin Vintage Miniature Vacuum Tube NOS w/Box

SYLVANIA 6FD7  Dual Triode The SYLVANIA 6FD7  is a 9-pin miniature tube with High-Mu ..

$19.00

6FM7  - GE Compactron Dual Triode Duodecar 12-Pin Vintage Miniature Vacuum Tube NOS w/Box

6FM7 - GE Compactron Dual Triode Duodecar 12-Pin Vintage Miniature Vacuum Tube NOS w/Box

GE 6FM7  Dual Triode Duodecar The GE 6FM7  is a miniature Dual Triode Duodecar type u..

$9.00

6FM7  - SYLVANIA Dual Triode Duodecar 12-Pin Vintage Miniature Vacuum Tube NOS w/Box

6FM7 - SYLVANIA Dual Triode Duodecar 12-Pin Vintage Miniature Vacuum Tube NOS w/Box

SYLVANIA 6FM7  Dual Triode Duodecar The SYLVANIA 6FM7  is a miniature Dual Triode Duo..

$9.00

6GH8A  - Browning Laboratories Pentode Triode 9-Pin Vintage Miniature Vacuum Tube NOS

6GH8A - Browning Laboratories Pentode Triode 9-Pin Vintage Miniature Vacuum Tube NOS

Browning 6GH8A   Pentode Triode The Browning 6GH8A  Manufactured for and used ext..

$19.00

6GH8A  - GE Pentode Triode 9-Pin Vintage Miniature Vacuum Tube NOS w/Box

6GH8A - GE Pentode Triode 9-Pin Vintage Miniature Vacuum Tube NOS w/Box

GE 6GH8A   Pentode Triode The GE 6GH8A  is a 9-pin miniature tube which contains..

$9.00

6GH8A  - National Pentode Triode 9-Pin Vintage Miniature Vacuum Tube NOS w/Box

6GH8A - National Pentode Triode 9-Pin Vintage Miniature Vacuum Tube NOS w/Box

National 6GH8A   Pentode Triode The National 6GH8A  is a 9-pin miniature tube wh..

$9.00

6GW8  - SYLVANIA High-Mu Triode Sharp-Cutoff Pentode 9-Pin Vintage Vacuum Tube NOS w/Box ECL86

6GW8 - SYLVANIA High-Mu Triode Sharp-Cutoff Pentode 9-Pin Vintage Vacuum Tube NOS w/Box ECL86

SYLVANIA 6GW8   Pentode Triode The SYLVANIA 6GW8/ECL86  is a 9-pin miniature tub..

$39.00

6GY6 - GE Sharp Cut Off Pentode 7-Pin Vintage Miniature Vacuum Tube NOS w/Box 6GX6

6GY6 - GE Sharp Cut Off Pentode 7-Pin Vintage Miniature Vacuum Tube NOS w/Box 6GX6

GE 6GY6  RF Pentode The GE 6GY6 / 6GX6  is a 7-pin miniature sharp cutoff pentode and..

$4.50

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