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KT88 / 6550

The KT88 can be used anywhere a 6550 can. The KT88 has a higher screen voltage rating, meaning it is a heavier duty tube. The KT88 is also more rugged. These reasons make the KT88 an excellent choice for use in bass amps in place of 6550s, where the tubes are exposed to lots of vibration and plate voltages of 700 or more. We do not recommend using a 6550 in place of a KT88.



Product Image Item Name- Price
Peavey "Super 65" 6550

Peavey "Super 65" 6550

Two Peavey 6550 replacement vacuum tube.
$85.95

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JJ KT88 matched pair

JJ KT88 matched pair

The JJ KT88 is an 6550 type tube with higher plate dissipation and plate voltage, and a more rugged design. They have a cleaner and more punchy sound in comparison to 6550s. We highly recommend these in Ampeg SVTs and other bass...
$79.95

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JJ KT88 matched single

JJ KT88 matched single

The JJ KT88 is an 6550 type tube with higher plate dissipation and plate voltage, and a more rugged design. They have a cleaner and more punchy sound in comparison to 6550s. We highly recommend these in Ampeg SVTs and other bass...
$41.95

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JJ KT88 matched quad

JJ KT88 matched quad

The JJ KT88 is an 6550 type tube with higher plate dissipation and plate voltage, and a more rugged design. They have a cleaner and more punchy sound in comparison to 6550s. We highly recommend these in Ampeg SVTs and other bass...
$159.95

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JJ KT88 matched sextet

JJ KT88 matched sextet

The JJ KT88 is an 6550 type tube with higher plate dissipation and plate voltage, and a more rugged design. They have a cleaner and more punchy sound in comparison to 6550s. We highly recommend these in Ampeg SVTs and other bass...
$285.95

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