This is Hybrid power amplifier circuit with PCB layout,100W-150W using STK4044XI,STK4046XI,STK4048XI so low THD and low and full protection system [...]
A tri audio amplifier has three in one amplification act drive specifically each audio speakers good quality, using TDA2030 and crossover network built-in [...]
This is gainclone amplifier circuit, project as stereo 40W-56 watt main amplifer use LM3875. It easy to build by 2 ICs ,more a few parts ,without any set...[...]
Here is a LM1875 datasheet, used for a 20W audio amplifier on Class AB type. Voltage Gain is 90dB. Low Harmonic Distortion Noise is 0.015%, 1KHz, 8 ohms [...]
Do you want low-frequency class B power amplifier? See TDA2020 may be one of choice that you not should miss. Gives 20W to 80W with helping from a transistor.