1000A - 9999Z
There are many great four digit tubes such as the 7025, 6550, 5654 and 7868. These tubes tend to be high-end versions of standard tubes or variants of standard tubes though there are plenty that just exist on their own.
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New Sovtek 6550WE Vacuum Tube
Sovtek
$65.90New Plate Current Tested Sovtek 6550WE Vacuum Tube The Sovtek 6550WE features a higher transconductance, higher output power, and an excellent sound performance. It will bring out that excellent...$65.90 -
New Matched Quad (4) Svetlana KT88-SV Gold Grid Vacuum Tubes
Svetlana
$300.08New Plate Current Matched Quad of Svetlana KT88-SV Gold Grid Vacuum Tubes The Svetlana KT88SV features a very high plate dissipation rating to improve upon already excellent reliability and...$300.08 -
New Svetlana KT88-SV Gold Grid Vacuum Tube
Svetlana
$71.55New Plate Current Tested Svetlana KT88-SV Gold Grid Vacuum Tube The Svetlana KT88SV features a very high plate dissipation rating to improve upon already excellent reliability and presentation...$71.55 -
New Matched Pair (2) Svetlana KT88-SV Gold Grid Vacuum Tubes
Svetlana
$150.33New Plate Current Matched Pair of Svetlana KT88-SV Gold Grid Vacuum Tubes The Svetlana KT88SV features a very high plate dissipation rating to improve upon already excellent reliability and...$150.33 -
New Matched Sextet (6) Mullard KT88 / 6550 Vacuum Tubes
Mullard
$377.21New Plate Current Matched Sextet of Mullard Reissue KT88 / 6550 Vacuum Tubes Directly from the manufacturer: "This is an exact copy of the KT88 valves that were manufactured by Marconi-Osram for...$377.21 -
New Matched Octet (8) Mullard KT88 / 6550 Vacuum Tubes
Mullard
$498.91New Plate Current Matched Octet of Mullard Reissue KT88 / 6550 Vacuum Tubes Directly from the manufacturer: "This is an exact copy of the KT88 valves that were manufactured by Marconi-Osram for...$498.91 -
New Matched Quad (4) Mullard KT88 / 6550 Vacuum Tubes
Mullard
$252.28New Plate Current Matched Quad of Mullard Reissue KT88 / 6550 Vacuum Tubes Directly from the manufacturer: "This is an exact copy of the KT88 valves that were manufactured by Marconi-Osram for...$252.28 -
New Mullard KT88 / 6550 Vacuum Tube
Mullard
$60.33New Plate Current Tested Mullard Reissue KT88 / 6550 Vacuum Tube Directly from the manufacturer: "This is an exact copy of the KT88 valves that were manufactured by Marconi-Osram for Marshall in...$60.33 -
New Matched Pair (2) Mullard KT88 / 6550 Vacuum Tubes
Mullard
$126.43New Plate Current Matched Pair of Mullard Reissue KT88 / 6550 Vacuum Tubes Directly from the manufacturer: "This is an exact copy of the KT88 valves that were manufactured by Marconi-Osram for...$126.43 -
New Matched Trio (3) Tung-Sol EF806S / 6267 Gold Pins Vacuum Tubes
Tung-Sol
$155.79New Gain Matched Trio of Tung-Sol Reissue EF806S / EF86 / 6267 Gold Pins Vacuum Tubes Modeled after the Telefunken EF806S, the higher end version of the 6267 or EF86, is of premium quality and...$155.79 -
New Tung-Sol EF806S / 6267 Gold Pins Vacuum Tube
Tung-Sol
$50.48New Gain Tested Tung-Sol Reissue EF806S / EF86 / 6267 Gold Pins Vacuum Tube Modeled after the Telefunken EF806S, the higher end version of the 6267 or EF86, is of premium quality and durability...$50.48 -
New Matched Pair (2) Tung-Sol EF806S / 6267 Gold Pins Vacuum Tubes
Tung-Sol
$104.94New Gain Matched Pair of Tung-Sol Reissue EF806S / EF86 / 6267 Gold Pins Vacuum Tubes Modeled after the Telefunken EF806S, the higher end version of the 6267 or EF86, is of premium quality and...$104.94