KT88 - 6550 -KT90 - KT120 - KT150 - KT170
The KT90, KT120 and KT150 are all tubes that were designed in the modern era. They are all loosely based on the KT88 but with much more power. You can always sub a KT150 for a KT120 or KT90 but never the other way around. The KT88 and 6550 are always interchangeable.
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New Matched Quad (4) Tung-Sol KT150 Vacuum Tubes
Tung-Sol
$526.94New Plate Current Matched Quad of Tung-Sol KT150 Vacuum Tubes With a massive plate dissipation of 70 watts, the Tung-Sol KT150 is the most powerful octal beam tetrode ever produced. A pair of KT150s can allow an amplifier with a power output approaching...$526.94 -
New Matched Pair (2) Tung-Sol KT150 Vacuum Tubes
Tung-Sol
$266.30New Plate Current Matched Pair (2) Tung-Sol KT150 Vacuum Tubes With a massive plate dissipation of 70 watts, the Tung-Sol KT150 is the most powerful octal beam tetrode ever produced. A pair of KT150s can allow an amplifier with a power output approaching...$266.30 -
New Tung-Sol KT150 Vacuum Tube
Tung-Sol
$124.83New Tung-Sol KT150 Vacuum Tube With a massive plate dissipation of 70 watts, the Tung-Sol KT150 is the most powerful octal beam tetrode ever produced. A pair of KT150s can allow an amplifier with a power output approaching 300 watts to be built. The...$124.83 -
New Matched Quad (4) Electro-Harmonix KT90 Vacuum Tubes
Electro-Harmonix
$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...$332.34 -
New Matched Pair (2) Electro-Harmonix KT90 Vacuum Tubes
Electro-Harmonix
$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...$166.46 -
New Electro-Harmonix KT90 Vacuum Tube
Electro-Harmonix
$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...$78.66 -
New Matched Octet (8) Electro-Harmonix KT88 Vacuum Tubes
Electro-Harmonix
$557.44New Plate Current Matched Octet 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...$557.44 -
New Matched Quad (4) Electro-Harmonix KT88 Vacuum Tubes
Electro-Harmonix
$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...$281.55 -
New Matched Pair (2) Electro-Harmonix KT88 Vacuum Tubes
Electro-Harmonix
$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...$141.06 -
New Electro-Harmonix KT88 Vacuum Tube
Electro-Harmonix
$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...$67.20 -
New Matched Octet (8) Electro-Harmonix 6550 Ceramic Vacuum Tubes
Electro-Harmonix
$546.38New Plate Current Matched Octet 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...$546.38 -
New Matched Sextet (6) Electro-Harmonix 6550 Ceramic Vacuum Tubes
Electro-Harmonix
$412.82New Plate Current Matched Sextet 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...$412.82