Here is the circuit diagram of superb mini audio power amplifier, That can be power with 4.5 volt dc to 18 volts dc (maximum). This amplifier is based on TDA1015, Product of NXP Semiconductors formerly PHILIPS Semiconductors. The TDA1015 is a monolithic integrated audio amplifier circuit in a 9-lead single in-line (SIL) plastic package. The device is especially designed for portable radio and recorder applications and delivers up to 4 watt in a 4 ohm load impedance. The very low applicable supply voltage of 3,6 V permits 6 V applications. Parts: R1330K R25.6K R34.7R C11uF-25V C21uF-25V C3100pF C4100nF-63V C5182pF C6224pF C7100uF-25V C8100nF-63V C910uF-25V C101KuF-25V IC1TDA1015 Applications : In-car use Your own unique application Power amplifier for audio projects For use with portable audio equipment Small but powerful multi-purpose amplifier Special features: Low current drain High output power Thermal protection High input impedance Separated preamplifier and power amplifier Limite...