14 Watts Audio Amplifier

The following circuit is a Audio amplifier which can give 14 watts of power. Feature : provide 14 watts of power, a discrete power op-amp, gain of approximately 150, preamp has voltage gain of 10, has extremely low distortion, relatively insensitive to the choice of components. Component : Capacitor, Resistor, potentiometer, CA3140, LM301, 1N751 Zener diodes, Speaker, 2N3904 transistor, 2N3906 transistor, TIP2955,1N4001 diode, Inductor,TIP3055.[michaelgellis.tripod.com]

2.5 W Stereo Class D Audio Power Amplifier Using LM4663

This circuit is a 2.5 W stereo class D audio power amplifier using LM4663. Feature : Two stereo input selector, Micropower shutdown mode, Stereo headphone amplifier, no heatsink needed, “Click and pop” suppression circuitry, Delta-sigma modulator, high efficiency, single supply. Component : resistor, capacitor, LM4663, speaker, headphone.[national.com]