Build Your Own Professional-Grade Audio Amp on the Sort of Cheap - IEEE Spectrum
DIY Housing for 100W Audio Amplifier Module | Paul Bupe, Jr
How to make a simple audio amplifier at home with 2 transistors D882, use 5v of the phone charger - YouTube | Audio amplifier, Diy amplifier, Amplifier
DIY 1000 Watt High Power Amplifier Using 2SC5200 & 2SA1943 Transistors - YouTube
Homemade Magnetic Amplifiers.
Make Your First Serious Amplifier : 10 Steps (with Pictures) - Instructables
Make Your First Serious Amplifier : 10 Steps (with Pictures) - Instructables