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Virtual Umbilical...

Hi Triode Kingdom,

I get what you're saying about not being crazy about the idea of an umbilical-type arrangement. A lot of the benefits of that arrangement are the distance of the power transformer from the rest of the preamp, as well as the fact it is in a separate metal enclosure.

You can get just about all of those benefits by using a larger chassis and placing the power trans/supply and preamp circuitry at the other end of the box. The power trans can also be in its own box inside the chassis for shielding. Shield the wires from the power supply, route close to the chassis plate, etc., to minimize radiated fields.

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