TECH AND TRADE 300W DIY 2n3055 Transistor Based Stereo Audio Amplifier Board with Karaoke MIC Driver, TRANSISTORS and 24 Volts Supply Circuit (Better Than 4440 IC) : Amazon.in: Electronics
30 W PVC Record 2N3055 Powerful Transistor Audio Amplifier Board, Thickness: 2 mm at Rs 799 in New Delhi
Simple amplifier circuit diagram - Electronics Help Care