The audio power amplifier module is based on the LM386 chip, with a power of up to 12 W. The volume is regulated by a built-in potentiometer. The YX1667 module has a 3.5 mm Jack input connector, two ARK-2 speaker outputs and two power supplies also on the ARK twisted connectors. Connecting the power supply is signaled by lighting the LED diode on the amplifier board.
Specifications:

• Acoustic audio power amplifier
• Layout: LM386
• Modes: stand-by and mute
• Voltage: 4 – 12 V DC
• Maximum output power: 12 W
• Speaker impedance: 4 – 32 Ohm
• Audio connector: Jack 3.5 mm
• Power connectors + output: twisted ARK
• LED indicating power connected
• Potentiometer for gain / volume control
• Plate with dimensions: 34 x 30 mm