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  http://gaydenko.com/ Amplifier and loudspeaker projects
  19 inch DIY PC Rack and server Project  
  Clive Backham's Audio Related Pages HowTo's on LP -> CD transfer
  Datasheet catalog  
  Do It Yourself Audio Forum & Wiki
  DIY Paradise  
  ECAD list List of electronics CAD SW
  Elfa Good DIY shop
  Eminence PA Speakers
  JBL Yes - JBL
  JT System Hardware projects blog
  Loudspeakersplus PA speakers
  Lydfaktor.no PA and audio equipment
  Maplin Has everything
  Modzone.dk PA and audio equipment
  Monacor Norge  
  Musikkpraksis Norsk musikkside
  Musikkweb.no  
  Norsk Musikk  
  Schlotzhauer Tysk webbutikk med alt innen PA
  Selfbouwluidsprekers Hollandsk høytalersted
     
  Andiha Norsk prosjektside
  Asahi Japanese enthusiast site - Tubes & Mosfet
  Audio Tube Amp Schematics  
  BME 440 Electronics for Neurobio  
  Bubuflex Hungarian site with many power-amp circuits
  Circuit Hut Lots of circuits and projects
  Cxem.net A few audio projects
  Delta Audio  
  DiscoverCircuits Links and schematics
  EKGHappy  
  Electrocardiogram (ECG, EKG) library  
  Electronic Circuits for the Hobbyist, by VA3AVR  
  Electronic Projects and other Fun Stuff  
  Electronics Lab Webshop, projects & SW downloads!!
  ESP - Elliott Sound Pages Hundres of projects
  Eurocircuits.com PCB - professional
  Headphoneamp.co.kr Korean headphone site
  Headwize Headphone amps and more
  Illuwatar - Audio  
  Light Bulb Volume Expander  
  Low-Cost PCB Design and Manufacture  
     
  LP to CDR Tips  
  Olimex PCB Manufacturing  
  Per-Anders Sjöström Some high-end DIY projects
  Power amp schematics Want to build a 20KW amp?
  RedCircuits Several project categories
  Sam Electronic Circuits Lots of circuits, audio and other....
  Schematic Heaven The Ultimate Tube Amp site
  Schematics For Free Many...
  Speakerbuilding.com Loudspeaker projects
  Thenoizeworks.co.uk PA and audio equipment
  The PCB Shop PCB - hobby & elektor
  The Tube CAD Journal  
  Tremolo  
  UaShem.com - electronic circuits, schematics, projects  
  User Manuals  
  ValveAudio Lots of amps etc
  W. Marshall Leach, Jr.  
  Yellowbeard Audio, mostly HF
  Zelfbouwluidsprekers Loudspeaker projects - from Holland