headphones preamp

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    Simple Headphone Output to tube Preamp - ideas?

    Hello all, I've searched and can't find an answer (that I understand) for what I want to do. I have a tube preamp (a grounded grid based on Bruce Rozenblit's design) that uses 3 12au7s. The output impedance is 200 ohms. I would like to add a simple headphone output - it doesn't need to be...