Pcbfun 7.4V Boost Amplifier Instruction Manual
Pcbfun 7.4V Boost Amplifier PRODUCT INFORMATION Product Features: 1. 7.4V boost power amplifier, dual-channel (2*25W), with rotary knobs for bass and treble adjustment. 2. Type-C charging; compatible with standard mobile phone chargers; clear charging status indication. 3. Low-power standby mode;…