10 LED Audio Level Indicator DIY VU Meter Preamp Power Amplifier Indicater
19,51 €
The board has a first-level amplifier (using 741 single op amp), and there are two sets of high and low inputs. DC - DC Step Up Converter DC Boost Converter Module 5V 12V To 350V 1200V Power. Yellow: connect to the positive signal line, green: connect to the negative signal line (outer layer, shielding layer).
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