This stereo amplifier boosts your speakers so that they can provide more detailed audio and give you a more complete experience. RCA cables is what you use to connect other units.
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VivoLink VL120005 Audio amplifier 2x50W VL120005
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VivoLink Audio Amplifier 2X50W
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vivolink audio amplifier 2x50w (class-d) 2 line + spdif input vl120005