Item Type: Small Stereo Audio Preamplifier. 1 x Small Stereo Audio Preamplifier. There are a total of three output ports, and the mixed output port can directly drive the headphones to listen. MANY COMPATIBLE DEVICES: The 3.5mm interface of the amplifier can be used with electret and ordinary condenser microphones, and the 6.5mm interface is a dynamic microphone, which can amplify wired and wireless microphones.
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