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 Octet (8) Electro-Harmonix KT90 Vacuum Tubes
Electro-Harmonix
Now: $593.13Was: $659.03New Plate Current Matched Octet of Electro-Harmonix KT90 Vacuum Tubes This tube has a bit more power than a KT88 but with the classic warm, bass-drenched sound of an EL34. The tube really is the best of both worlds. These are drop-in substitutes for a...Now: $593.13Was: $659.03 -
On Sale
New Matched Quad (4) Electro-Harmonix KT90 Vacuum Tubes
Electro-Harmonix
Now: $299.11Was: $332.34New Plate Current Matched Quad of Electro-Harmonix KT90 Vacuum Tubes This tube has a bit more power than a KT88 but with the classic warm, bass-drenched sound of an EL34. The tube really is the best of both worlds. These are drop-in substitutes for a...Now: $299.11Was: $332.34 -
On Sale
New Matched Pair (2) Electro-Harmonix KT90 Vacuum Tubes
Electro-Harmonix
Now: $149.81Was: $166.46New Plate Current Matched Pair of Electro-Harmonix KT90 Vacuum Tubes This tube has a bit more power than a KT88 but with the classic warm, bass-drenched sound of an EL34. The tube really is the best of both worlds. These are drop-in substitutes for a...Now: $149.81Was: $166.46 -
On Sale
New Electro-Harmonix KT90 Vacuum Tube
Electro-Harmonix
Now: $70.79Was: $78.66New Plate Current Tested Electro-Harmonix KT90 Vacuum Tubes This tube has a bit more power than a KT88 but with the classic warm, bass-drenched sound of an EL34. The tube really is the best of both worlds. These are drop-in substitutes for a 6550 or KT88...Now: $70.79Was: $78.66 -
On Sale
New Matched Quad (4) Electro-Harmonix KT88 Vacuum Tubes
Electro-Harmonix
Now: $253.40Was: $281.55New Plate Current Matched Quad of Electro-Harmonix KT88 Vacuum Tubes The Electro-Harmonix KT88 is different than the Electro-Harmonix 6550. While they are both great tubes, the KT88 version is modeled after the British original and has a different...Now: $253.40Was: $281.55 -
On Sale
New Matched Pair (2) Electro-Harmonix KT88 Vacuum Tubes
Electro-Harmonix
Now: $126.95Was: $141.06New Plate Current Matched Pair of Electro-Harmonix KT88 Vacuum Tubes The Electro-Harmonix KT88 is different than the Electro-Harmonix 6550. While they are both great tubes, the KT88 version is modeled after the British original and has a different...Now: $126.95Was: $141.06 -
On Sale
New Electro-Harmonix KT88 Vacuum Tube
Electro-Harmonix
Now: $60.48Was: $67.20New Plate Current Tested Electro-Harmonix KT88 Vacuum Tube The Electro-Harmonix KT88 is different than the Electro-Harmonix 6550. While they are both great tubes, the KT88 version is modeled after the British original and has a different internal plate...Now: $60.48Was: $67.20 -
On Sale
New Matched Pair (2) Electro-Harmonix 6550 Ceramic Vacuum Tubes
Electro-Harmonix
Now: $124.47Was: $138.30New Plate Current Matched Pair 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...Now: $124.47Was: $138.30 -
On Sale
New Electro-Harmonix 6550 Vacuum Tube
Electro-Harmonix
Now: $59.31Was: $65.90New Plate Current Tested Electro-Harmonix 6550EH Vacuum Tube 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 want. With...Now: $59.31Was: $65.90 -
On Sale
New Matched Octet (8) Tung-Sol 6550 Coke Bottle Reissue Vacuum Tubes
Tung-Sol
Now: $453.62Was: $504.02New Plate Current Matched Octet of Tung-Sol 6550 (KT88) Coke Bottle Reissue Vacuum Tubes This 6550 has everything its vintage counterpart featured down to the bottle shape and size, three getter construction, gold grids, and carbonized plates. From the...Now: $453.62Was: $504.02 -
On Sale
New Matched Quad (4) Tung-Sol 6550 Coke Bottle Reissue Vacuum Tubes
Tung-Sol
Now: $228.88Was: $254.31New Plate Current Matched Quad of Tung-Sol 6550 (KT88) Coke Bottle Reissue Vacuum Tubes This 6550 has everything its vintage counterpart featured down to the bottle shape and size, three getter construction, gold grids, and carbonized plates. From the...Now: $228.88Was: $254.31 -
On Sale
New Matched Pair (2) Tung-Sol 6550 Coke Bottle Reissue Vacuum Tubes
Tung-Sol
Now: $114.71Was: $127.46New Plate Current Matched Pair of Tung-Sol 6550 (KT88) Coke Bottle Reissue Vacuum Tubes This 6550 has everything its vintage counterpart featured down to the bottle shape and size, three getter construction, gold grids, and carbonized plates. From the...Now: $114.71Was: $127.46