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Proton 520-B

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Enhanced version of the 520 integrated amplifier with improved specifications and features

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Subito

Amplificatore stereo PROTON 520 b Subito €159 Dec 13, 2025

willhaben.at

Proton 520B Stereo Verstärker willhaben.at €100 Dec 13, 2025

willhaben.at

(RESERVIERT) PROTON 520B ( NAD ) komplett recapped , serviciert ! willhaben.at €79 Dec 12, 2025

Subito

PROTON 520 b Amplificatore stereo Subito €160 Dec 1, 2025

Bazos Slovakia

Proton 520B Bazos Slovakia €75 Nov 22, 2025

Subito

Amplificatore integrato Proton 520B Subito €120 Apr 19, 2025

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Model Variants of Proton 520-B

1. Proton
2. Integrated amplifier

520