Filament Modules

Originally designed to provide DC for Coleman Regs, these all in one modules give up to 15V of low ripple DC output from an AC input. With 2A and 3.5A versions most popular DHT's can be configured using them. Schottky rectificarion and choke input filtering assure quiet and relaible operation. Full details can be seen HERE.

Current Handling


Plate Chokes

We offer plate chokes on both nickel and amorphous cores for just about any imaginable use all designed to fit each individual particular need. Check out the forum for discussions on the sonic character of the various core materials.

Priced From $200 each


Power Supply Chokes

The power supply is every bit as important as the rest of a circuit and wide bandwidth chokes are a solid foundation to build your power supply onto. We offer Amorphous chokes for higher AC applications and Nickel chokes for lower AC applications. We have had great results with CLCLC power supplies with the first choke being Amorphous and the second choke being Nickel

Priced From $100 each


Tapped Line Level Crossover and RIAA inductors

These tapped inductors allow for various line, speaker and RIAA filters to be built. Full circuit design support is available through the forum. Of particular interest to many lately are the inductors for LCR RIAA networks. These can be desinged to any impedance desired. The Phono section of the forum documents many of the possibilities.

Priced From $100 each


Filament Supply Isolation Chokes

Many die-hard DHT users find that when they must go to DC filaments, major improvements happen when the last element of the filter is an isolation choke to keep the audio signal out of the filament supply. As an added bonus this makes your filament supply appear as a high impedance so the filament current can now traverse the output transformer (or plate choke) through a tertiary winding to offset plate current.

Priced From $100 each


Speaker Level Crossover Inductors

Linear wide bandwidth cored inductors to fit specific needs. Tapped versions and spice simulation available.

Priced From $200 each