jadi jpJadis JP80 Stereo Tube Preamplifier SS Power Supply Unit Phono JP-80 5999 5999 USD USD. ebay Jadis JP-80 11000 11000 USD USD. Audiogon Jadis JP-80 MCJadis JP-200 FEATURE. 1. Circuit desn is with reference to the classical Jadis JP-200. 2. 12AX7 x 6 pcs for amplfication. 3. Independent power supplies for tube power and tube filaments. 4.