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The U.S. Acoustics Barbara Ann amplifier is one class act, class AB to be exact. The Barbara Ann is a high-quality bridgeable 4-channel amplifier that offers 100 watts per channel at 4 ohms. This amplifier is ideal for powering front and rear speakers, a pair of passive component sets, or a 2-way active component set.




  • 4 x 100 Watts RMS @ 4 Ohm

  • Angled Terminals for show quality installations

  • Butterworth Crossover Filters for serious
    high-end performance

  • Old School Full Complimentary low distortion Class AB design

  • DC, Short Circuit, Thermal and Overload Protection

  • Diagnostic LEDs

  • Docking Pads® to reduce vibration and
    extend the life of your amplifier

U.S. Acoustics Barbara Ann 4x100w

  • Output Power at 14.4V Input

    RMS per channel at 4Ω

    100 W x 4 CH

    RMS per channel at 2Ω

    175 W x 4 CH

    RMS Bridged Mono at 4Ω

    350 W x 2 CH

    RMS Mono at 1Ω


    Input Sensitivity

    10Hz – 30KHz +/- 0.5dB

    Frequency Response

    10Hz – 30KHz +/- 0.5dB


    <  0.01%

    S/N Ratio

    > 97 dB

    Channel Separation

    > 92 dB

    Damping Factor @ 100hZ 4Ω

    > 200

    High Pass, 12dB/Octave

    15-500 Hz, 50-3K Hz

    Low Pass, 24dB/Octave

    55-3.5K Hz

    Subsonic Filter


    Variable Bass Boost

    (0 to +12dB boost @ 50Hz)


    Wired Remote


    Phase Shift




    3x 35A


    16.4 x 8.9 x 2.2

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