1、This power amplifier adopts TI import TPA3116D2 as the core, and the official data single chip is 50W*2. 2、The engineer reads through the materials and combines his own experience to develop a 50W*2 double core technology by means of bridge connection, and the theory can reach 100W*2. 3、The engineer reads through the materials and combines his own experience to develop a 50W*2 double core technology by means of bridge connection, and the theory can reach 100W*2. 4、Power supply is recommended to use switch power supply above 12-24V 100W. 5、This board is the finished board, connected to the power and sound box to check the new experience brought by pure digital music! Features: 1. This power amplifier adopts TI import TPA3116D2 as the core, and the official data single chip is 50W*2. 2. The engineer reads through the materials and combines his own experience to develop a 50W*2 double core technology by means of bridge connection, and the theory can reach 100W*2. 3. Because this chip is a digital chip, its efficiency can reach over 90%, so it has the advantages of high power and low heat. 4. Power supply is recommended to use switch power supply above 12-24V 100W. 5. This board is the finished board, connected to the power and sound box to check the new experience brought by pure digital music! Specification: Material: ABS Color: Red Chip Selection: TPA3116 Input Power: DC12-24V Output Power: 2*100W Input Resistance: 51K*2 Output Match: 4-8 ohms Frequency Response Range: 14-100Kz SNR: 100db Output Channel: 2 (left channel + right channel) Size: Approx. 10 * 6.5 * 2 cm / 3.9 * 2.6 * 0.8 in Package list: 1 * Power Amplifier Board Note: Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.