Iron Pre SMD Balanced Bundle

By inserting the switch in the return line to the power transformer I leave everything after the last reservoir cap unchanged

H2 Harmonic Generator

it depends on the tube type and the actual high voltage

Bill of Materials

THD was around 1%

even more than the Nelson Pass original

Boards designed for mounting active component directly to heatsinks share a common universal mounting specification so you can tap your holes once and then re-use those holes for future projects

but enjoy the convenience of a full kit

about 75V)

In some cases it may be desirable to mechanically isolate or shock mount the tube

Brass standoffs

4 x 3 inch) board holds all parts (sourced by you) including a heatsink