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1000A - 9999Z

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 Matched Octet (8) Psvane Treasure KT88-Z Smoked Vacuum Tubes

    New Matched Octet (8) Psvane Treasure KT88-Z Smoked Vacuum Tubes

    Psvane

    $638.65
    New Plate Current Matched Octet of Psvane Treasure KT88-Z Smoked Vacuum Tubes This is a tube with a confusing and interesting history. These KT88-Z tubes are produced by Psvane which was copied by Shuguang. Shuguang's version of the KT88-Z eventually...
    $638.65
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    $638.65
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  • New Matched Sextet (6) Psvane Treasure KT88-Z Smoked Vacuum Tubes

    New Matched Sextet (6) Psvane Treasure KT88-Z Smoked Vacuum Tubes

    Psvane

    $481.06
    New Plate Current Matched Sextet of Psvane Treasure KT88-Z Smoked Vacuum Tubes This is a tube with a confusing and interesting history. These KT88-Z tubes are produced by Psvane which was copied by Shuguang. Shuguang's version of the KT88-Z eventually...
    $481.06
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    $481.06
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  • New Matched Quad (4) Psvane Treasure KT88-Z Smoked Vacuum Tubes

    New Matched Quad (4) Psvane Treasure KT88-Z Smoked Vacuum Tubes

    Psvane

    $321.26
    New Plate Current Matched Quad of Psvane Treasure KT88-Z Smoked Vacuum Tubes This is a tube with a confusing and interesting history. These KT88-Z tubes are produced by Psvane which was copied by Shuguang. Shuguang's version of the KT88-Z eventually...
    $321.26
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    $321.26
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  • New Matched Pair (2) Psvane Treasure KT88-Z Smoked Vacuum Tubes

    New Matched Pair (2) Psvane Treasure KT88-Z Smoked Vacuum Tubes

    Psvane

    $160.83
    New Plate Current Matched Pair of Psvane Treasure KT88-Z Smoked Vacuum Tubes This is a tube with a confusing and interesting history. These KT88-Z tubes are produced by Psvane which was copied by Shuguang. Shuguang's version of the KT88-Z eventually...
    $160.83
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    $160.83
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  • New Shuguang Treasure KT88-Z Smoked Vacuum Tube

    New Psvane Treasure KT88-Z Smoked Vacuum Tube

    Psvane

    $81.39
    New Plate Current Tested Psvane Treasure KT88-Z Smoked Vacuum Tube This is a tube with a confusing and interesting history. These KT88-Z tubes are produced by Psvane which was copied by Shuguang. Shuguang's version of the KT88-Z eventually became more...
    $81.39
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    $81.39
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  • New Matched Octet (8) Telefunken KT88 Vacuum Tubes

    New Matched Octet (8) Telefunken KT88 Vacuum Tubes

    Telefunken

    $992.08
    New Factory Matched Octet of Telefunken KT88 Vacuum Tubes Introduced in 1956 by GEC, the KT88 was the higher-rated answer to the 6550. The Telefunken KT88 is an incredibly durable tube that can handle taxing applications whether it is guitar or hifi...
    $992.08
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    $992.08
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  • New Matched Sextet (6) Telefunken KT88 Vacuum Tubes

    New Matched Sextet (6) Telefunken KT88 Vacuum Tubes

    Telefunken

    $747.25
    New Plate Current Matched Sextet of Telefunken KT88 Vacuum Tubes Introduced in 1956 by GEC, the KT88 was the higher-rated answer to the 6550. The Telefunken KT88 is an incredibly durable tube that can handle taxing applications whether it is guitar or...
    $747.25
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    $747.25
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  • New Matched Quad (4) Telefunken KT88 Vacuum Tubes

    New Matched Quad (4) Telefunken KT88 Vacuum Tubes

    Telefunken

    $499.01
    New Factory Matched Quad of Telefunken KT88 Vacuum Tubes Introduced in 1956 by GEC, the KT88 was the higher-rated answer to the 6550. The Telefunken KT88 is an incredibly durable tube that can handle taxing applications whether it is guitar or hifi...
    $499.01
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    $499.01
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  • New Matched Pair (2) Telefunken KT88 Vacuum Tubes

    New Matched Pair (2) Telefunken KT88 Vacuum Tubes

    Telefunken

    $249.81
    New Factory Matched Pair of Telefunken KT88 Vacuum Tubes Introduced in 1956 by GEC, the KT88 was the higher-rated answer to the 6550. The Telefunken KT88 is an incredibly durable tube that can handle taxing applications whether it is guitar or hifi...
    $249.81
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    $249.81
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  • New Telefunken KT88 Vacuum Tube

    New Telefunken KT88 Vacuum Tube

    Telefunken

    $126.41
    New Factory Tested Telefunken KT88 Vacuum Tube Introduced in 1956 by GEC, the KT88 was the higher-rated answer to the 6550. The Telefunken KT88 is an incredibly durable tube that can handle taxing applications whether it is guitar or hifi amplification...
    $126.41
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    $126.41
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  • New Matched Octet (8) Telefunken 6550 Vacuum Tubes

    New Matched Octet (8) Telefunken 6550 Vacuum Tubes

    Telefunken

    $902.42
    New Factory Matched Octet of Telefunken 6550 Vacuum Tubes An excellent power tube Telefunken fit for classic amps such as Ampeg, capable of delivering a full 35-watt output. This is the ideal tube for warm tones with smooth overdrive in guitar amplifiers...
    $902.42
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    $902.42
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  • New Matched Sextet (6) Telefunken 6550 Vacuum Tubes

    New Matched Sextet (6) Telefunken 6550 Vacuum Tubes

    Telefunken

    $680.01
    New Factory Matched Sextet of Telefunken 6550 Vacuum Tubes An excellent power tube Telefunken fit for classic amps such as Ampeg, capable of delivering a full 35-watt output. This is the ideal tube for warm tones with smooth overdrive in guitar...
    $680.01
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    $680.01
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  • New Matched Quad (4) Telefunken 6550 Vacuum Tubes

    New Matched Quad (4) Telefunken 6550 Vacuum Tubes

    Telefunken

    $454.18
    New Factory Matched Quad of Telefunken 6550 Vacuum Tubes An excellent power tube Telefunken fit for classic amps such as Ampeg, capable of delivering a full 35-watt output. This is the ideal tube for warm tones with smooth overdrive in guitar amplifiers...
    $454.18
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    $454.18
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  • New Matched Pair (2) Telefunken 6550 Vacuum Tubes

    New Matched Pair (2) Telefunken 6550 Vacuum Tubes

    Telefunken

    $227.40
    New Factory Matched Pair of Telefunken 6550 Vacuum Tubes An excellent power tube Telefunken fit for classic amps such as Ampeg, capable of delivering a full 35-watt output. This is the ideal tube for warm tones with smooth overdrive in guitar amplifiers...
    $227.40
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    $227.40
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  • New Telefunken 6550 Vacuum Tube

    New Telefunken 6550 Vacuum Tube

    Telefunken

    $115.20
    New Factory Tested Telefunken 6550 Vacuum Tube An excellent power tube by Telefunken fit for classic amps such as Ampeg, capable of delivering a full 35-watt output. This is the ideal tube for warm tones with smooth overdrive in guitar amplifiers. They...
    $115.20
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    $115.20
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  • New Matched Octet (8) Psvane KT88C Hifi Vacuum Tubes

    New Matched Octet (8) Psvane KT88C Hifi Vacuum Tubes

    Psvane

    $450.30
    New Plate Current Matched Octet of Psvane KT88C Hifi (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. Along with a...
    $450.30
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    $450.30
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  • New Matched Sextet (6) Psvane KT88C Hifi Vacuum Tubes

    New Matched Sextet (6) Psvane KT88C Hifi Vacuum Tubes

    Psvane

    $339.80
    New Plate Current Matched Sextet of Psvane KT88C Hifi (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. Along with a build...
    $339.80
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    $339.80
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  • New Matched Quad (4) Psvane KT88C Hifi Vacuum Tubes

    New Matched Quad (4) Psvane KT88C Hifi Vacuum Tubes

    Psvane

    $227.08
    New Plate Current Matched Quad of Psvane KT88C Hifi (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. Along with a build...
    $227.08
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    $227.08
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  • New Matched Pair (2) Psvane KT88C Hifi Vacuum Tubes

    New Matched Pair (2) Psvane KT88C Hifi Vacuum Tubes

    Psvane

    $113.74
    New Plate Current Matched Pair of Psvane KT88C Hifi (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. Along with a build...
    $113.74
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    $113.74
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  • New Psvane KT88C Hifi Vacuum Tube

    New Psvane KT88C Hifi Vacuum Tube

    Psvane

    $57.85
    New Plate Current Tested Psvane KT88C Hifi (6550) Vacuum Tube As one of the most prominent audiophile vacuum tube manufacturers, Psvane’s designs have established a benchmark for clean and accurate sound reproduction. Along with a build quality...
    $57.85
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    $57.85
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  • New Factory Matched Octet Tung-Sol KT170 Vacuum Tubes

    New Factory Matched Octet (8) Tung-Sol KT170 Vacuum Tubes

    Tung-Sol

    $1,312.55
    New Factory Matched Octet of Tung-Sol KT170 Vacuum Tubes We are so happy to carry Tung-Sol’s newest high power tetrode. The wonderful folks at Tung-Sol have done it again, and are introducing a brand new tube to the world! We’re so happy that...
    $1,312.55
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    $1,312.55
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  • New Factory Matched Sextet Tung-Sol KT170 Vacuum Tubes

    New Factory Matched Sextet (6) Tung-Sol KT170 Vacuum Tubes

    Tung-Sol

    $988.13
    New Factory Matched Sextet of Tung-Sol KT170 Vacuum Tubes We are so happy to carry Tung-Sol’s newest high power tetrode. The wonderful folks at Tung-Sol have done it again, and are introducing a brand new tube to the world! We’re so happy...
    $988.13
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    $988.13
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  • New Factory Matched Quad Tung-Sol KT170 Vacuum Tubes

    New Factory Matched Quad (4) Tung-Sol KT170 Vacuum Tubes

    Tung-Sol

    $661.59
    New Factory Matched Quad of Tung-Sol KT170 Vacuum Tubes We are so happy to carry Tung-Sol’s newest high power tetrode. The wonderful folks at Tung-Sol have done it again, and are introducing a brand new tube to the world! We’re so happy that...
    $661.59
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    $661.59
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  • New Factory Matched Pair Tung-Sol KT170 Vacuum Tubes

    New Factory Matched Pair (2) Tung-Sol KT170 Vacuum Tubes

    Tung-Sol

    $333.77
    New Factory Matched Pair of Tung-Sol KT170 Vacuum Tubes We are so happy to carry Tung-Sol’s newest high power tetrode. The wonderful folks at Tung-Sol have done it again, and are introducing a brand new tube to the world! We’re so happy that...
    $333.77
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    $333.77
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  • New Factory Tested Tung-Sol KT170 Vacuum Tube

    New Factory Tested Tung-Sol KT170 Vacuum Tube

    Tung-Sol

    $167.19
    New Factory Tested Tung-Sol KT170 Vacuum Tube We are so happy to carry Tung-Sol’s newest high power tetrode. The wonderful folks at Tung-Sol have done it again, and are introducing a brand new tube to the world! We’re so happy that at least...
    $167.19
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    $167.19
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  • Brand New Plate Current Matched Octet (8) Sovtek 6550WE Vacuum Tubes

    New Matched Octet (8) Sovtek 6550WE Vacuum Tubes

    Sovtek

    $579.25
    New Plate Current Matched Octet of Sovtek 6550WE Vacuum Tubes The Sovtek 6550WE features a higher transconductance, higher output power, and an excellent sound performance. It will bring out that excellent range for any guitar amp.
    $579.25
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    $579.25
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  • Brand New Plate Current Matched Sextet (6) Sovtek 6550WE Vacuum Tubes

    New Matched Sextet (6) Sovtek 6550WE Vacuum Tubes

    Sovtek

    $437.63
    New Plate Current Matched Sextet of Sovtek 6550WE Vacuum Tubes The Sovtek 6550WE features a higher transconductance, higher output power, and an excellent sound performance. It will bring out that excellent range for any guitar amp.
    $437.63
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    $437.63
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  • Brand New Plate Current Matched Quad (4) Sovtek 6550WE Vacuum Tubes

    New Matched Quad (4) Sovtek 6550WE Vacuum Tubes

    Sovtek

    $292.60
    New Plate Current Matched Quad of Sovtek 6550WE Vacuum Tubes The Sovtek 6550WE features a higher transconductance, higher output power, and an excellent sound performance. It will bring out that excellent range for any guitar amp.
    $292.60
    Qty in Cart: 0
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    $292.60
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  • Brand New Plate Current Matched Pair (2) Sovtek 6550WE Vacuum Tubes

    New Matched Pair (2) Sovtek 6550WE Vacuum Tubes

    Sovtek

    $146.60
    New Plate Current Matched Pair of Sovtek 6550WE Vacuum Tubes The Sovtek 6550WE features a higher transconductance, higher output power, and an excellent sound performance. It will bring out that excellent range for any guitar amp.
    $146.60
    Qty in Cart: 0
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    $146.60
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  • Brand New Plate Current Tested Sovtek 6550WE Vacuum Tube

    New Sovtek 6550WE Vacuum Tube

    Sovtek

    $74.81
    New 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 range for any guitar amp.
    $74.81
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    $74.81
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  • Brand New Plate Current Matched Octet (8) Svetlana KT88-SV Gold Grid Tubes

    New Matched Octet (8) Svetlana KT88-SV Gold Grid Vacuum Tubes

    Svetlana

    $630.28
    Brand New Plate Current Matched Octet of Svetlana KT88-SV Gold Grid 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,...
    $630.28
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    $630.28
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  • Brand New Plate Current Matched Sextet (6) Svetlana KT88-SV Gold Grid Tubes

    New Matched Sextet (6) Svetlana KT88-SV Gold Grid Vacuum Tubes

    Svetlana

    $475.90
    Brand New Plate Current Matched Sextet of Svetlana KT88-SV Gold Grid 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,...
    $475.90
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    $475.90
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  • Brand New Plate Current Matched Quad (4) Svetlana KT88-SV Gold Grid Vacuum Tubes

    New Matched Quad (4) Svetlana KT88-SV Gold Grid Vacuum Tubes

    Svetlana

    $318.12
    New 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 presentation. Alongside a gold plated grid, tri-plate anode,...
    $318.12
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    $318.12
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  • Brand New Plate Current Matched Pair (2) Svetlana KT88-SV Gold Grid Vacuum Tubes

    New Matched Pair (2) Svetlana KT88-SV Gold Grid Vacuum Tubes

    Svetlana

    $159.36
    New 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,...
    $159.36
    Qty in Cart: 0
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    $159.36
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  • Brand New Plate Current Tested Svetlana KT88-SV Gold Grid Vacuum Tube

    New Svetlana KT88-SV Gold Grid Vacuum Tube

    Svetlana

    $81.18
    New 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...
    $81.18
    Qty in Cart: 0
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    $81.18
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  • New Plate Current Matched Octet (8) Mullard Reissue KT88 / 6550 Vacuum Tubes

    New Matched Octet (8) Mullard KT88 / 6550 Vacuum Tubes

    Mullard

    $620.35
    New 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...
    $620.35
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    $620.35
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  • New Plate Current Matched Sextet (6) Mullard Reissue KT88 / 6550 Vacuum Tubes

    New Matched Sextet (6) Mullard KT88 / 6550 Vacuum Tubes

    Mullard

    $468.46
    New 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...
    $468.46
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    $468.46
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  • New Plate Current Matched Quad (4) Mullard Reissue KT88 / 6550 Vacuum Tubes

    New Matched Quad (4) Mullard KT88 / 6550 Vacuum Tubes

    Mullard

    $313.15
    New 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...
    $313.15
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    $313.15
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  • Brand New Plate Current Matched Pair (2) Mullard Reissue KT88 6550 Vacuum Tubes

    New Matched Pair (2) Mullard KT88 / 6550 Vacuum Tubes

    Mullard

    $156.88
    New 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...
    $156.88
    Qty in Cart: 0
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    $156.88
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  • Brand New Plate Current Tested Mullard Reissue KT88 / 6550 Vacuum Tube

    New Mullard KT88 / 6550 Vacuum Tube

    Mullard

    $79.94
    New 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...
    $79.94
    Qty in Cart: 0
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    $79.94
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