LM1875T mono boom level power 30W amplifier board speaker power amplifier PCB production DIY kit LM1875

Performance parameters:
Output power: typical 20W (Max. 30W)
The speaker impedance: 4 Ω - 8 Ω
Total harmonic distortion: < 0.04%
Signal to noise ratio: 105dB
Frequency response: 14hz-100khz (maximum range calculated by RC high-low power circuit: 3.29 hz-482.29 kHz)
Power supply voltage: recommended ±25V (highest voltage shall not exceed ±30V, full bridge rectification of 18V is 25V)
PCB size of engineering drawing is 46.5*37.5mm