Products from the USA may come with an input voltage of 110V–120V, requiring a step-down transformer. Check the device wattage to select the correct power converter.
•Single Power Supply: Input coupling capacitor uses imported brand infinite capacitors. The board is powered by a single power supply and has a voltage regulator chip, which is convenient to match with a single power amplifier
•Volume Potentiometer: Preamplifier board come with volume potentiometer, which possess more
•SMD Technology: Manufactured by SMD technology, the power input adds a rectifier bridge, which can be used for both AC and DC
•Convenient to Use: There is no need to separate the positive and negative poles when inputting DC, which is more convenient to use
•Good Quality PCB Materials: Good quality PCB materials possess reliability and miniaturization, good maintenance and interchangeability
