DC12V Car 6N8P (6H8C 6SN7) Tube Valve PreAmplifier Board Audio DIY. 1pc DC12V Car 6N8P (6H8C 6SN7) Tube Valve PreAmplifier Board DIY. Contains a 6N8P tube. (This edition improves the use of 3A high-power regulator chip, no need to use the radiator to strengthen the filter.).
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