This neatly designed preamplifier & source selector (4 inputs) has two separate circuits for each channel of the stereo signal. Each of these circuits operates in pure Class A and is powered by its own regulated linear power supply to provide extremely clean channel separation and maintain full signal precision. Each of the channels is driven by JFET K170BL / J74BL.

The JC2-FET has an elaborate analog circuit with separate  pre-amplified channels fed separately with a combo of toroidal transformers. It offers volume control via a rotary potentiometer located on the front panel.

The device also offers a source selection function on its 4x stereo inputs (RCA connectors) mounted on its rear panel.
The source selection is made using a rotary selector located on the front panel.

The rear panel includes all input and output connectors to allow clean and tidy wiring. The analog output is available on a stereo RCA connector and will thus be able to work with most of your amplifier models.

There is also the power connector (IEC) designed for 220V voltages.