Fet Valve and Tube Preamplifier Upgrade

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  • Regular price $1,399.00


We can upgrade your Fet Valve, Transcendence 7, Transcendence 8, and Ultra preamps built in either an SL or EC chassis* to new Fet Valve CF performance. This upgrade replaces the entire main circuit board.

This upgrade reuses all your existing chassis components, including the faceplate.

*Tone control circuits in the EC chassis will be defeated.