Audio Circuits
http://www.discovercircuits.com/A/au-audio.htm
Designing your own power supply
http://www.zero-distortion.com/start.htm
http://www.zero-distortion.com/techno/powersupply/powersi.htm
Driver measurements
http://www.mhsoft.nl/messen_en.asp
ChipAmp
http://www.shine7.com/audio/pa100.htm
http://myweb.tiscali.co.uk/nuukspot/decdun/gaincloneindex.html
http://wiredworld.tripod.com/tronics/mixer.html
http://dogbreath.de/Chipamps/GainCardCopy/GainCardCopy.html
http://www.adx.co.nz/techinfo/audio/gainclone1.htm
http://www.discovercircuits.com/A/au-audio.htm
Designing your own power supply
http://www.zero-distortion.com/start.htm
http://www.zero-distortion.com/techno/powersupply/powersi.htm
Driver measurements
http://www.mhsoft.nl/messen_en.asp
ChipAmp
http://www.shine7.com/audio/pa100.htm
http://myweb.tiscali.co.uk/nuukspot/decdun/gaincloneindex.html
http://wiredworld.tripod.com/tronics/mixer.html
http://dogbreath.de/Chipamps/GainCardCopy/GainCardCopy.html
http://www.adx.co.nz/techinfo/audio/gainclone1.htm