Assemble LSDY 12AT7 Tube Pre-amplifier Power Supply Board For LS37 Tube Phono Amp Audio

Product Details:

LSDY tube voltage regulator board, ARC tube voltage regulator circuit.

The 6Z4 tube is rectified, the 12AT7 tube is used for voltage comparison, and the 12B4A tube is used for adjustment.

The voltage is adjustable from 150V to 400V.

With a set of filament voltage regulator, it can output 6.3V or 12.6V voltage.

Size: length 222MM × width 128MM

Note: This item does not include 6Z4, 12AT7, 12B4A tubes. You need to buy it separately.

Tip: We have a suitable transformer, please contact me if you need it!