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Power amplifiers stereo — Boulder 861

Description, images, technical data and specifications

Boulder 861
Image source — © Boulder

Boulder 861 is a two—channel power amplifier with a balanced circuit, outputs 2x90 watts (4 ohms). It features minimal distortion, high sound quality and reliability, and is ideal for audiophiles.

Specifications

  • Model name

    861

  • Input sensitivity (mV)

    N/A

  • Input impedance (balanced) (Ω)

    100 000

  • Input impedance (single-ended) (Ω)

    N/A

  • Output impedance (balanced) (Ω)

    N/A

  • Output impedance (single-ended) (Ω)

    N/A

  • Max current (A)

    N/A

  • Output power (8Ω) (W)

    75

  • Output power (4Ω) (W)

    110

  • Gain (dBu)

    26

  • Frequency response low +/- 3dB (Hz)

    0.015

  • Frequency response high +/- 3dB (Hz)

    150 000

  • Signal to Noise Ratio (dB)

    N/A

  • Total Harmonic Distortion + Noise (0% global feedback) (%)

    N/A

  • Total Harmonic Distortion + Noise (100% global feedback) (%)

    0.01

  • Max power consumption (W)

    550

  • Damping factor

    N/A

  • Dimensions (mm)

    305 x 305 x 89

  • Weight (kg)

    10

  • Official link

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