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THD products currently available at The Rock Inn:

THD Hot Plate Attenuator

Get huge gain at studio volume! Available in 4 (Red). 8 (Purple) and 16ohms (Blue). Currently out of stock due to a supply shortage.

The Hot Plate ...

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THD YJ20D Yellow Jacket Cathode Duet

Converts your amp to Class A EL84 operation. An adapter that permits the use of an EL84 power tube in place of a 6V6 in ...

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R.R.P. $195.00

THD YJ7591D Yellow Jacket 7591 Duet

Converts your amp to Class A EL84 operation. An adapter that permits the use of an EL84 power tube in an older Ampeg amp or ...

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R.R.P. $195.00

THD YJSD Yellow Jacket Standard Duet

An adapter that permits the use of an EL84 power tube in place of a 6L6, EL34, or 6550 in grid-bias amps. There are no ...

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R.R.P. $195.00

THD YJUNIV Yellow Jacket UniValve Single

Converts your amp to Class A EL84 operation. An adapter that permits the use of an EL84 power tube in your THD UniValve amplifier. There ...

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R.R.P. $85.00