Boards - Power Supplies

The all new Universal PSU V3.0. Bigger and badder than ever, complete with a well illustrated build guide. Fully compatible and optimized for the ...

This pack includes one Soft Start Board and one Speaker Turn-On Delay and DC protector board.  They are not available for purchase separately. Soft...

You want to build a preamp, a DAC, a phono stage, anything that needs a nominal supply voltage between 3.3V and 18V or even more, positive and/or ...

Your projects need a low voltage power supply. Very low noise. No hum, no mains pops. Efficient and portable. Enter the SilentSwitcher by Linear Au...

This high voltage delay for tube amplifiers was designed by Jan Didden of Linear Audio and published in the October 2019 issue of audioXpress. Why ...

A high-voltage, low noise, fully protected regulator for tube circuits T-reg is a high voltage regulator aimed at tube-level high voltage amplifier...

The PO89ZB, an inline DC filter for SMPS wall warts, preamps, HPAs, Korg NuTubes, B1, etc.   This filter is limited to single rail 48V DC, 3A appli...

"About a year and a half ago I released a power supply filter board and thump suppression relay circuit to go with the DIY Sony N channel VF...