TDA7492 amplifier board 2*50W can BTL to 100W MAX 

High efficiency with original Philips TDA7492
Siemens capacitive coupling capacitors imported 0.47UF, main filter electrolytic
Yung Philips brand, capacity 2200UF / 25VUF * 2, ensure strong
The steady flow of power support.
Resistor selection of rings metal resistance, the main circuit employs a precision of ± 1% rings
Metal film resistors, ensure the machine a good signal to noise ratio.
1.6mm thick sheet using double-sided PCB, 2.0 oz copper thickness, HASL whole process to ensure that the size of the current through the good performance. PCB-class quality.
The basic performance parameters:
Work: Class D
Quiescent Current: 20mA
Efficiency: 90%
Rated Output Power: 2 * 50W or BTL 1*100W MAX
Frequency response: 20Hz to 20KHz
Working voltage: DC18V to DC24V
Recommended supply voltage: DC24V
Maximum output current: 3A