US $12.28
Feature
This circuit can be used when the sound of your device is small when connected to the power amplifier. It is suitable for small audio signal amplification, the amplification factor is 10 times (20db), and the front 3.5mm interface can be connected to headphones;
Power supply: DC9-19V
The amplifier chip is a dual op amp NE5532
Input and output are 3.5mm headphone jack or RCA
Size: 87*50*37MM
Pckage included:
1PCS preamplifier
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