AJHorn Loudspeaker Simulation Software  

AJHorn is a calculation program for any loudspeaker, especially Horns and Transmissionlines.

LTspice IV  

LTspice IV is a high performance SPICE simulator and schematic capture including models for easing the simulation.

FreePCB Printed Circuit Board Editor  

FreePCB is a free, open-source PCB editor for Windows. It was designed to be easy to learn and easy to use, yet capable of professional-quality work.

LibreCAD 2D CAD System  

LibreCAD is a free, open-source 2D CAD application based on the community edition of QCad. LibreCAD has been re-structured and is available in more than 20 languages and for all major operating systems.

EAC Exact Audio Copy  

Exact Audio Copy is a free audio grabber for audio CDs. It works with a advanced technology, which reads audio CDs almost perfectly.

SoX Sound eXchange  

SoX is the Swiss Army knife of sound processing programs. It is a command line utility that can convert numerous formats of computer audio files in to other formats and also apply various effects to these audio files.

Foobar Audio Player  

Foobar is an freeware audio player for the Windows platform. It is undoubtedly one of the lightest, fastest and most functional audio players.

Mp3tag Audio Tag Editor  

Mp3tag is a powerful and easy-to-use tool to edit metadata of common audio formats. It can rename files based on the tag information, replace characters or words in tags etc. and also supports online database lookups among many other things. In a word, it is the ultimate audio tag editor.

Audacity Audio Editor  

Audacity is a free, open-source, cross-platform software for recording and editing sounds.




diyAudio is a DIY audio community to learn, share knowledge, and enjoy interacting with others interested in the design and construction of audio components.

Audio Asylum  

Audio Asylum is a community for audiophiles. There you can ask questions and get advice on audio equipment. It is also a special place for music lovers.



Art Ludwig - Art Ludwig's Sound Page  

Geoff Moss - The Class A Amplifier Site  

Shinichi-Kamijo - Evolve Power Amplifiers  

Claudio Bonavolta - Give life to music, use tubes...  

Nelson Pass - DIY Power Amplifiers and Preamplifiers  

Jean-Marc Plantefeve - Amplification audiophile et DIY  

Siegfried Linkwitz - Loudspeakers and electro-acoustics  



Michael Percy Audio - Parts for audio hobbyists  

Diy HiFi Supply - Components for your high-end audio  

Hifi Collective Ltd - Ultimate components for hi-fi diyers  

Selectronic - Components, Kits, Tools and Measuring Instruments