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.
-
New Matched Sextet (6) Genalex Gold Lion KT88 Reissue Vacuum Tubes
Genalex
$498.38New Plate Current Matched Sextet of Genalex Gold Lion KT88 (6550) Vacuum Tube These are as close to the original Genalex KT88s as you could possibly get. Made in Russia, they look identical to the originals down to the plate structure. They even have...$498.38 -
New Matched Quad (4) Genalex Gold Lion KT88 Reissue Vacuum Tubes
Genalex
$333.06New Plate Current Matched Quad of Genalex Gold Lion KT88 (6550) Vacuum Tubes These are as close to the original Genalex KT88s as you could possibly get. Made in Russia, they look identical to the originals down to the plate structure. They even have gold...$333.06 -
New Matched Pair (2) Genalex Gold Lion KT88 Reissue Vacuum Tubes
Genalex
$166.82New Plate Current Matched Pair of Genalex Gold Lion KT88 (6550) Vacuum Tubes These are as close to the original Genalex KT88s as you could possibly get. Made in Russia, they look identical to the originals down to the plate structure. They even have gold...$166.82 -
New Genalex Gold Lion KT88 Reissue Vacuum Tube
Genalex
$79.29New Plate Current Tested Genalex Gold Lion KT88 (6550) Vacuum Tube These are as close to the original Genalex KT88s as you could possibly get. Made in Russia, they look identical to the originals down to the plate structure. They even have gold plated...$79.29 -
New Matched Octet (8) JJ 7591 Vacuum Tubes
JJ Electronic
$257.34New Plate Current Matched Octet of JJ 7591 Vacuum Tubes There is finally a reliable 7591 that rivals the originals. These JJs are an excellent choice for your old Scott amplifier as well as many others that used the famous old 7591. The vintage 7591s are...$257.34 -
New Matched Sextet (6) JJ 7591 Vacuum Tubes
JJ Electronic
$192.80New Plate Current Matched Sextet of JJ 7591 Vacuum Tubes There is finally a reliable 7591 that rivals the originals. These JJs are an excellent choice for your old Scott amplifier as well as many others that used the famous old 7591. The vintage 7591s...$192.80 -
New Matched Quad (4) JJ 7591 Vacuum Tubes
JJ Electronic
$127.34New Plate Current Matched Quad of JJ 7591 Vacuum Tubes There is finally a reliable 7591 that rivals the originals. These JJs are an excellent choice for your old Scott amplifier as well as many others that used the famous old 7591. The vintage 7591s are...$127.34 -
New Matched Pair (2) JJ 7591 Vacuum Tubes
JJ Electronic
$65.10New Plate Current Matched Pair of JJ 7591 Vacuum Tubes There is finally a reliable 7591 that rivals the originals. These JJs are an excellent choice for your old Scott amplifier as well as many others that used the famous old 7591. The vintage 7591s are...$65.10 -
New JJ 7591 Vacuum Tube
JJ Electronic
$31.52New Plate Current Tested JJ 7591 Vacuum Tube There is finally a reliable 7591 that rivals the originals. These JJs are an excellent choice for your old Scott amplifier as well as many others that used the famous old 7591. The vintage 7591s are almost...$31.52 -
![New Matched Octet (8) Svetlana 6550C [KT88] Vacuum Tubes](https://cdn11.bigcommerce.com/s-dfccaj35/images/stencil/350x350/products/36951/53732/NP022-8__93130.1724388788.JPG?c=2 "New Matched Octet (8) Svetlana 6550C [KT88] Vacuum Tubes")
New Matched Octet (8) Svetlana 6550C [KT88] Vacuum Tubes
Svetlana
$502.55New Plate Current Matched Octet of Svetlana 6550C Vacuum Tubes An excellent true 6550 that'll make your amp sing. These are known for their robust quality and classic American 6550 tone. Will work in place of: 6550C, 6550, KT88, 6550A Testing...$502.55 -
![New Matched Sextet (6) Svetlana 6550C [KT88] Vacuum Tubes](https://cdn11.bigcommerce.com/s-dfccaj35/images/stencil/350x350/products/36950/53731/NP022-6__55954.1737837894.JPG?c=2 "New Matched Sextet (6) Svetlana 6550C [KT88] Vacuum Tubes")
New Matched Sextet (6) Svetlana 6550C [KT88] Vacuum Tubes
Svetlana
$379.95New Plate Current Matched Sextet of Svetlana 6550C Vacuum Tubes An excellent true 6550 that'll make your amp sing. These are known for their robust quality and classic American 6550 tone. Will work in place of: 6550C, 6550, KT88, 6550A Testing...$379.95 -
![New Matched Quad (4) Svetlana 6550C [KT88] Vacuum Tubes](https://cdn11.bigcommerce.com/s-dfccaj35/images/stencil/350x350/products/36949/53730/NP022-4__24279.1737839205.JPG?c=2 "New Matched Quad (4) Svetlana 6550C [KT88] Vacuum Tubes")
New Matched Quad (4) Svetlana 6550C [KT88] Vacuum Tubes
Svetlana
$254.10New Plate Current Matched Quad of Svetlana 6550C Vacuum Tubes An excellent true 6550 that'll make your amp sing. These are known for their robust quality and classic American 6550 tone. Will work in place of: 6550C, 6550, KT88, 6550A Testing...$254.10