Linear Audio T-reg V5A high voltage, low noise, fully protected regulator for tube circuits T reg is a high voltage regulator aimed at tube level high voltage amplifiers. Diyaudio offers a partial kit for this unit, consisting of the PCB, the high speed opamp, the series pass MOSFET and a current source MOSFET. The PCB comes with pre installed Constant Current source and reset pushbutton. Other parts are generic and probably in most peoples parts bins or easily available

Two monoblock amplifiers can be assembled by most DIYers in an afternoon

very handy if you'd like to experiment with several designs on a single chassis

Esentally a scaled-up F5

Note that the kit as provided has an absolute max input voltage of 500V

solid-state equipment

There is no doubt some bias shift with signal level in this arrangement

the first "buffer" stage of amplification has been placed on a removable daughter board

NORWOOD is all-SMD

It has two mounting holes on one long side with a distance of 36mm

Several threads on diyaudio discuss customization for a wide range of output voltages

with less than 10uV broadband noise

Rated input 140mV (INPUT-1)  410mV (INPUT-2)*UL connection