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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On Sale
New Matched Pair (2) Svetlana KT88-SV Gold Grid Vacuum Tubes
Svetlana
Now: $135.30Was: $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 presentation. Alongside a gold plated grid, tri-plate anode,...Now: $135.30Was: $150.33 -
On Sale
New Svetlana KT88-SV Gold Grid Vacuum Tube
Svetlana
Now: $64.40Was: $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. Alongside a gold plated grid, tri-plate anode, and exact...Now: $64.40Was: $71.55 -
On Sale
New Matched Octet (8) Mullard KT88 / 6550 Vacuum Tubes
Mullard
Now: $449.02Was: $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 Marshall in the late 1960s and 1970s. Excellent...Now: $449.02Was: $498.91 -
On Sale
New Matched Sextet (6) Mullard KT88 / 6550 Vacuum Tubes
Mullard
Now: $339.49Was: $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 Marshall in the late 1960s and 1970s. Excellent...Now: $339.49Was: $377.21 -
On Sale
New Matched Quad (4) Mullard KT88 / 6550 Vacuum Tubes
Mullard
Now: $227.05Was: $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 Marshall in the late 1960s and 1970s. Excellent replacement...Now: $227.05Was: $252.28 -
On Sale
New Matched Pair (2) Mullard KT88 / 6550 Vacuum Tubes
Mullard
Now: $113.79Was: $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 Marshall in the late 1960s and 1970s. Excellent replacement...Now: $113.79Was: $126.43 -
On Sale
New Mullard KT88 / 6550 Vacuum Tube
Mullard
Now: $54.30Was: $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 the late 1960s and 1970s. Excellent replacement output...Now: $54.30Was: $60.33 -
On Sale
New Current Matched Quad (4) JJ KT88 Vacuum Tubes
JJ Electronic
Now: $250.82Was: $278.69New Current Matched Quad of JJ KT88 Vacuum Tubes JJ is an undisputed leader in modern vacuum tube manufacturing, and for good reason. In the power stage, their KT88 (6550) is an industry favorite, as it provides excellent sonic performance along with...Now: $250.82Was: $278.69 -
On Sale
New Current Matched Pair (2) JJ KT88 Vacuum Tubes
JJ Electronic
Now: $125.67Was: $139.63New Current Matched Pair of JJ KT88 Vacuum Tubes JJ is an undisputed leader in modern vacuum tube manufacturing, and for good reason. In the power stage, their KT88 (6550) is an industry favorite, as it provides excellent sonic performance along with...Now: $125.67Was: $139.63 -
On Sale
New JJ KT88 Vacuum Tube
JJ Electronic
Now: $59.87Was: $66.52New Plate Current Tested JJ KT88 Vacuum Tube JJ is an undisputed leader in modern vacuum tube manufacturing, and for good reason. In the power stage, their KT88 (6550) is an industry favorite, as it provides excellent sonic performance along with great...Now: $59.87Was: $66.52 -
New Matched Octet (8) Psvane KT88-T Classic MKII II Series Vacuum Tubes
Psvane
$842.06New Plate Current Matched Octet of Psvane KT88-T Classic MKII Series (6550) Vacuum Tubes As one of the most prominent audiophile vacuum tube manufacturers, Psvane’s designs have established a benchmark for clean and accurate sound reproduction,...$842.06 -
New Matched Sextet (6) Psvane KT88-T Classic MKII II Series Vacuum Tubes
Psvane
$634.58New Plate Current Matched Sextet of Psvane KT88-T Classic MKII Series (6550) Vacuum Tubes As one of the most prominent audiophile vacuum tube manufacturers, Psvane’s designs have established a benchmark for clean and accurate sound reproduction,...$634.58