Obsolete series

Obsolete diy audiophile boards

Colpitts-Clapp oscillator – Master clock for digital audio

Emitter coupled oscillator – Master clock for digital audio

Pierce CMOS oscillator – Master clock for digital audio

Emitter coupled combo oscillators – Master clock for digital audio

Oven for Emitter coupled oscillator with SC-Cut crystal

Dual in line adapter for oscillators

Oscillators power supply, clock switch and dividers

Push-pull low noise regulator

Sine to Square converter – Master clock wave converter for digital audio