Following on from Questyle's acclaimed QP1R, the QP2R is the newest portable digital audio player to feature Questyle's patented Current Mode Amp (CMA) technology. Many improvements have been made on the original QP1R design, including higher storage capacity, an upgraded navigation wheel, and greater audio dominance upon the internal PCB. QP2R inherits Qustyle's new design of Current Mode Amplifier built with all discrete circuit and pure Class A working state. Due to the full-balanced output, the amplifier circuits are upgraded to four groups from the original two, which is just like a car of two-wheel drive upgrades to four-wheel drive. Four groups of Current Mode Amplifier circuits are located on both front and back of the PCB, which significantly shortens the distance that signals bypass on the PCB. Thus the audio performance is improved, which gives QP2R 0.0005% ultra-low distortion and less than 0.1 ohms output impedance. Based on Current Mode Amplifier, QP2R is the first portable DAP in the world which uses pure Class A BIAS control system. Questyle Audio makes use of the Pure Class A BIAS Control System to ensure that Current Mode Amplifiers operate only in the state of pure Class A when driving different loads (headphones or speakers), especially heavy loads, which achieves perfect listening experience and outstanding technical performance, which is like driving a super sport car, just imaging the car is set to RACE mode (Sport Plus or Sport Response mode), and its engine is running at the ultra-high speed, and the rapid shift together with a strong grip is enough to conquer you and give you great satisfaction.
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