Board Introduction
- Mute switch (up to start, down to shut down the machine)
- Power indicator and Bluetooth indicator
- Treble adjustment knob (turn left to attenuate and turn right to enhance)
- Bass adjustment knob (turn left to attenuate and turn right to enhance)
- Volume adjustment knob (turn left to attenuate and turn right to enhance
- DC powerinput socket(5.5-2.5)
- Bluetooth antenna