Mini Electronic Audio Stereo Preamplifier, Small Stereo Audio Preamplifier Amplifier Mini Stereo Audio Preamplifier Ne5532 with 3.5mm Input Output

Power Supply Voltage: Mini electronic audio stereo preamplifier DC power supply should try to use low power supply. When the input amplitude is less than 1v, 12v power supply is sufficient. When the input is greater than 1v, please increase the power supply voltage, the maximum power supply voltage is 24v, low energy consumption and environmental protection.