Technologies for Quick Response and Clear Sound Quick-Response Power Supply Circuit Wide Range Linear Circuit LAPTs for Power Output Direct Construction to reduce distortion Quick-Response Power Supply Circuit Innovations for 'Open Sound' Twin-Mono Construction ESymmetrical Circuit Layout Twin Toroidal Transformers Clean Ground Path Quality Sound for Every Music Lover Twin-Mono Construction ESymmetrical Circuit Layout Other Technical Features A/B-Class Power Output Stage Preout Terminal A/B-Class Power Output Stage