Product Features: Output short circuit protection Mini small size, easy to install 30W dual channel, no heat sink Power amplifier board, then the horn between the two pads DC voltage 0V, between the speaker pad and GND DC voltage is half of the power supply voltage. Use 4 oh speakers, the maximum power supply voltage can not exceed 16V, otherwise the chip is too high heat damage to the amplifier. Use 8 ohm speakers, the maximum power supply voltage can not exceed 24V, otherwise the voltage is too high breakdown power amplifier chip. 8 ohm speakers basically do not need to add heat sink, less than 8 ohm speakers, if the chip temperature is higher than 60 degrees, because immediately stop working, plus heat sink fan, otherwise the temperature will immediately burn the chip. Unit Type: piece Package Included: 1 *Module (If the number of products received is incorrect, please contact us . we will refund or give you a replacement)

We highly appreciate all customers opinions to improve the selling, also if anything you unsatisfied, please contact us for probable best solution. Package Included: 1 *Module (If the number of products received is incorrect, please contact us . we will refund or give you a replacement). Output short circuit protection. 30W dual channel, no heat sink. Power amplifier board, then the horn between the two pads DC voltage 0V, between the speaker pad and GND DC voltage is half of the power supply voltage.