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Proton 550

Stereo Integrated Amplifier

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Proton 550

Specifications

Power output: 50 watts per channel into 8Ω (stereo)

Frequency response: 20Hz to 20kHz

Total harmonic distortion: 0.03%

Damping factor: 100

Input sensitivity: 0.25mV (MC), 2.5mV (MM), 145mV (line)

Signal to noise ratio: 68dB (MC), 76dB (MM), 95dB (line)

Dimensions: 420 x 96 x 310mm

Weight: 9kg

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rating
Reviewed Nov 21st, 2017 by freeport audio

Cant say anything bad about these amps. Like NAD models at the time, they have huge headroom and fantastic,mellow but powerful sound. This one is pretty rare. Better grab them if you see them.
Ok, only downside.. spring speaker terminals.
Love these. Great job mr proton!!

 

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