KECES P28High Quality Toroidal Transformer provide pure power. Separate ground for each output rail. Ultra low ripple noise. No humming or buzz noise for 50Hz and peak load. Newly designed the Circuit that do not use any ICs. It is truly Analog design. Quantum Resonance technology that provides a subtle field that makes all electromechanical components resonate in unison to improve coherence and timing. There are 6 zone and each zone are separated. USB