Build a Great Sounding Audio Amplifier (with Bass Boost) from the LM386
Build Your Own Professional-Grade Audio Amp on the Sort of Cheap - IEEE Spectrum
Audio Amplifiers and Speaker Designs - Presenting the inside look of the DIY Amplifier that we shared in the previous post .It is a Stereo amplifier using the IC LM3886 .it also
DIY 250W/4ohm amplifier based on "blameless" topology, and measurements | Audio Science Review (ASR) Forum
3U Aluminum DIY Audio Amplifier Box Rack Chassis Shell Case Studio Cabinet, 17"W | eBay
A Web-Enabled, High Quality, DIY Audio Amp - IEEE Spectrum