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Proton 520

Stereo Integrated Amplifier

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Proton 520

Specifications

  • Power output: 20 watts per channel into 8Ω (stereo)

    Frequency response: 20Hz to 20kHz

    Total harmonic distortion: 0.015%

    Damping factor: 90

    Input sensitivity: 0.2mV (MC), 2.5mV (MM), 150mV (line)

    Signal to noise ratio: 68dB (MC), 80dB (MM), 90dB (line)

    Price: GBP £115 (1992)

  • Power output: 20 watts per channel into 8Ω (stereo)

    Frequency response: 20Hz to 20kHz

    Total harmonic distortion: 0.015%

    Damping factor: 300

    Input sensitivity: 2.5mV (MM), 150mV (line)

    Signal to noise ratio: 87dB (MM), 96dB (line)

    Output: 150mV (line)

    Speaker load impedance: 4Ω (minimum)

    Dimensions: 420 x 87 x 280mm

    Weight: 5.2kg

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Comments

re: 520b

Clipping Power at 8 Ohm / 4 Ohm / 2 Ohm: 26W / 35W / 39W
Dynamic Power at 8 Ohm / 4 Ohm / 2 Ohm: 46W / 78W / 100W
T.H.D. & I.M.D. at Rated Power 20W: 0.015%
S/N Ratio: 96dB

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