The evolution of preamplifiers in the history of volume control. Accuphase has addressed the issue of variable resistance with our original AAVA technology, which evolved into Balanced AAVA, and later became Dual Balanced AAVA. The Dual Balanced AAVA with ANCC installed in the C-3900S represents circuitry technology that achieves the ultimate in volume control. The C-3900S is a premium preamplifier for breathing life into deeply
emotional performances and songs.

    Dual Balanced AAVA volume control
    High-gain discrete current feedback type input amplifier
    ANCC technology minimizes noise and distortion
    Quiet and smooth volume sensor
    8 parallel output amplifiers
    Left and right balance adjustment with increased adjustment steps
    5-stage loudness compensator
    Separate toroidal power transformers for left and right
    Separate unit amplifiers for left and right
    Printed circuit boards using glass cloth fluorocarbon resin
    Wood cabinet with natural grain finish