Features:

• With this module the sound quality is very good.
• Bluetooth wireless audio input and the max receive distance is 10m.
• Applicable speaker impedance are 4/6/8/10 ohm, great for turning normal speaker into bluetooth speaker.
• Digital amplifier has a higher overload capacity than analog amplifier, and it won't cause crossover distortion, transient inter modulation distortion and you don't have to worry about the loudspeaker internal resistance.
• HW-644 TPA3110 Digital Amplifier Board only, other accessories demo in the picture is not included!

Specification:

• Amplifier Chip: TPA3110
• Working Voltage: 8-26VDC (power input with polarity protection)
• Recommended Power Supply: 12V DC 2A current
• Output Power: 2x15W
• Recommended Speaker Impedance: 4 ~ 10 Ohms
• With Mute Interface: MUTE (generally vacant)