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Is This the Best Class-D Amplifier? Purifi Audio's Eigentakt Amplifier Review (Take 2, Ep:15) - YouTube
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Tutorial - Build your own Eigentakt Power Amplifier - YouTube
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NAD Launches C 298 Power Amplifier With Purifi Eigentakt Amplification - Essential Install
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1ET400A - PURIFI
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NAD C 298 Power Amplifier with Purifi Eigentakt Amplification | Digital Cinema
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