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 Quad (4) Electro-Harmonix 6550 Ceramic Vacuum Tubes
Electro-Harmonix
Now: $248.42Was: $276.02New Plate Current Matched Quad of Electro-Harmonix 6550 Ceramic Vacuum Tubes The 6550EH is one of the finest new production tubes for any amp using 6550 or KT88. The 6550EH offers the maximum power of any 6550 with the linearity guitar and bass players...NP057-4Now: $248.42Was: $276.02 -
New Matched Octet (8) Shuguang Treasure KT88-Z Smoked Vacuum Tubes
Shuguang
Now: $670.97Was: $789.38New Plate Current Matched Octet of Shuguang Treasure KT88-Z Smoked Vacuum Tubes The KT88-Z features special carbon sprayed smoked glass which helps electrons flow more smoothly and reduces noise. As a part of the treasure series, this is one of the more...NP242-8Now: $670.97Was: $789.38 -
New Matched Sextet (6) Shuguang Treasure KT88-Z Smoked Vacuum Tubes
Shuguang
Now: $505.81Was: $595.07New Plate Current Matched Sextet of Shuguang Treasure KT88-Z Smoked Vacuum Tubes The KT88-Z features special carbon sprayed smoked glass which helps electrons flow more smoothly and reduces noise. As a part of the treasure series, this is one of the...NP242-6Now: $505.81Was: $595.07 -
New Matched Quad (4) Shuguang Treasure KT88-Z Smoked Vacuum Tubes
Shuguang
Now: $337.89Was: $397.52New Plate Current Matched Quad of Shuguang Treasure KT88-Z Smoked Vacuum Tubes The KT88-Z features special carbon sprayed smoked glass which helps electrons flow more smoothly and reduces noise. As a part of the treasure series, this is one of the more...NP242-4Now: $337.89Was: $397.52 -
New Matched Pair (2) Shuguang Treasure KT88-Z Smoked Vacuum Tubes
Shuguang
Now: $169.19Was: $199.05New Plate Current Matched Pair of Shuguang Treasure KT88-Z Smoked Vacuum Tubes The KT88-Z features special carbon sprayed smoked glass which helps electrons flow more smoothly and reduces noise. As a part of the treasure series, this is one of the more...NP242-2Now: $169.19Was: $199.05 -
New Shuguang Treasure KT88-Z Smoked Vacuum Tube
Shuguang
Now: $80.26Was: $94.42New Plate Current Tested Shuguang Treasure KT88-Z Smoked Vacuum Tube The KT88-Z features special carbon sprayed smoked glass which helps electrons flow more smoothly and reduces noise. As a part of the treasure series, this is one of the more high-end...NP242-1Now: $80.26Was: $94.42 -
New Matched Pair (2) Telefunken KT88 Vacuum Tubes
Telefunken
$242.95New 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...NP208-2$242.95 -
New Telefunken KT88 Vacuum Tube
Telefunken
$115.03New 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...NP208-1$115.03 -
New Matched Quad (4) Telefunken 6550 Vacuum Tubes
Telefunken
$428.41New 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...NP206-4$428.41 -
New Matched Pair (2) Telefunken 6550 Vacuum Tubes
Telefunken
$214.49New 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...NP206-2$214.49 -
New Telefunken 6550 Vacuum Tube
Telefunken
$101.67New 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...NP206-1$101.67 -
New Matched Octet (8) Psvane KT88C Hifi Vacuum Tubes
Psvane
$500.86New 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...NP205-8$500.86 -
New Matched Sextet (6) Psvane KT88C Hifi Vacuum Tubes
Psvane
$378.68New 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...NP205-6$378.68 -
New Matched Quad (4) Psvane KT88C Hifi Vacuum Tubes
Psvane
$253.26New 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...NP205-4$253.26 -
New Matched Pair (2) Psvane KT88C Hifi Vacuum Tubes
Psvane
$126.92New 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...NP205-2$126.92 -
New Psvane KT88C Hifi Vacuum Tube
Psvane
$60.56New 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...NP205-1$60.56 -
New Matched Pair (2) Tung-Sol KT170 Vacuum Tubes
Tung-Sol
Now: $253.02Was: $281.13New 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 at least...NP196-2Now: $253.02Was: $281.13 -
New Tung-Sol KT170 Vacuum Tube
Tung-Sol
Now: $118.61Was: $131.79New 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 one company is...NP196-1Now: $118.61Was: $131.79 -
New Matched Octet (8) Sovtek 6550WE Vacuum Tubes
Sovtek
$546.38New 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. Will work...NP158-8$546.38 -
New Matched Sextet (6) Sovtek 6550WE Vacuum Tubes
Sovtek
$412.82New 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. Will work...NP158-6$412.82 -
New Matched Quad (4) Sovtek 6550WE Vacuum Tubes
Sovtek
$276.02New 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. Will work in...NP158-4$276.02 -
New Matched Pair (2) Sovtek 6550WE Vacuum Tubes
Sovtek
$138.30New 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. Will work in...NP158-2$138.30 -
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 range for any guitar amp. Will work in place...NP158-1$65.90 -
New Matched Octet (8) Svetlana KT88-SV Gold Grid Vacuum Tubes
Svetlana
$594.51Brand 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,...NP151-8$594.51 -
New Matched Sextet (6) Svetlana KT88-SV Gold Grid Vacuum Tubes
Svetlana
$448.92Brand 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,...NP151-6$448.92 -
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 presentation. Alongside a gold plated grid, tri-plate anode,...NP151-4$300.08 -
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 presentation. Alongside a gold plated grid, tri-plate anode,...NP151-2$150.33 -
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. Alongside a gold plated grid, tri-plate anode, and exact...NP151-1$71.55 -
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...NP146-8Now: $449.02Was: $498.91 -
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...NP146-6Now: $339.49Was: $377.21 -
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...NP146-4Now: $227.05Was: $252.28 -
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...NP146-2Now: $113.79Was: $126.43 -
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...NP146-1Now: $54.30Was: $60.33 -
New Matched Quad (4) Tung-Sol EF806S / 6267 Gold Pins Vacuum Tubes
Tung-Sol
Now: $185.98Was: $206.64New Gain Matched Quad 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 durability. Very effective as an extra low noise tube. Gold...NP144-4Now: $185.98Was: $206.64 -
New Matched Trio (3) Tung-Sol EF806S / 6267 Gold Pins Vacuum Tubes
Tung-Sol
Now: $140.21Was: $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 durability. Very effective as an extra low noise tube. Gold...NP144-3Now: $140.21Was: $155.79 -
New Matched Pair (2) Tung-Sol EF806S / 6267 Gold Pins Vacuum Tubes
Tung-Sol
Now: $94.45Was: $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 durability. Very effective as an extra low noise tube. Gold...NP144-2Now: $94.45Was: $104.94 -
New Tung-Sol EF806S / 6267 Gold Pins Vacuum Tube
Tung-Sol
Now: $45.43Was: $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. Very effective as an extra low noise tube. Gold pins...NP144-1Now: $45.43Was: $50.48 -
New Current Matched Octet (8) JJ KT88 Vacuum Tubes
JJ Electronic
$551.72New Current Matched Octet 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...NP109-8$551.72 -
New Current Matched Sextet (6) JJ KT88 Vacuum Tubes
JJ Electronic
$416.82New Current Matched Sextet 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...NP109-6$416.82 -
New Current Matched Quad (4) JJ KT88 Vacuum Tubes
JJ Electronic
$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...NP109-4$278.69