D-12 Microphone Power Supply (PSU)

D-12 Power Supply Chassis (requires D-12 PSU PCB)

A ready-made power supply enclosure for D-12 and C12 style tube microphone builds, designed to host the D-12 PSU PCB.

What's included

- Black steel enclosure with 7-pin MIC IN and 3-pin XLR OUT connectors

- Power transformer, selectable 100 to 240 VAC via external switch

- Continuously variable pattern control, from omni through cardioid to figure-8

- AC power cord included

Required to complete

- D-12 PSU PCB (sold separately)

- Components for the D-12 PSU PCB, per the build guide parts list

Important

The unit ships with a basic factory board installed. That board does not provide the negative grid bias the 6072A requires, and it must be replaced by the D-12 PSU PCB. Do not use the factory board to power your microphone. The D-12 PSU PCB reuses the enclosure, transformer and connectors, and delivers a properly regulated 120 V rail, the grid bias on pin 4, and a lower noise floor.

Follow the wiring in the build guide. Do not cut or modify the 7-pin connector links unless the guide tells you to.