Sjöström Audio

http://sjostromaudio.com/pages/index.php/hifi-projects/132-qsxm2-the-extreme-phono-riaa-amplifier
QSX Mark II - The extreme phono (RIAA) amplifier   Click on the picture to get a larger view. The front view of the original QSX Amplifier from 1986. Click on the picture to get a larger view. The top view of the QSX Amplifier pcb. High...
http://www.newclassd.com
Lars Clausen has left LCAudio and started a new company and of course new products. His new class D module may be one of the best right now.
http://sjostromaudio.com/pages/index.php/hifi-projects/119-pa03-pavel-dudek-s-deluxe-gainclone
Click on the picture to get a larger view Click on the picture to get a larger view.Picture shows the input connector. Click on the picture to get a larger view.Picture shows the speaker outputs. The design is based on...
http://sjostromaudio.com/pages/index.php/hifi-projects/133-qsxm3-the-extreme-phono-riaa-amplifier
QSX Mark III - The extreme phono (RIAA) amplifier       Click on the picture to get a larger view. The printed circuit board of the QSX Mark III Amplifier. Interesting features In order to get an extremely linear and extremely low distortion design...
http://sjostromaudio.com/pages/index.php/hifi-projects/117-jsr06-sjoestroem-super-regulator-power-supply
Click on the pictures to get a larger view. Some background can be found in my JSR-01 project. This design is based on my JSR-01 project and the goal was to make the pcb with hole mounted parts as small and versatile as possible. The design The...
https://sklep.toroidy.pl
All sorts of toroidal transformers and inductors. They have also transformers for tube amplifiers.
https://www.eevblog.com
This is the hub fo for the EEVBlog, forum, youtube etc. This is a gold mine for all with the interest for the electronics.
http://www.adx.co.nz/techinfo/audio/gainclone1.htm
A technical article explaining what Gainclones are, why they "work" as high end amplifiers, and some of the things that go into making a good audio amplifier.
http://www.lyraconnoisseur.com
Hifi stuff for the real enthusiast. Check out the case of the amp which is made out of one piece!
http://www.ne.jp/asahi/evo/amp/
This japanese guy is crazy! Check out his amplifier designs! Most of the pages are in japanese but if you use the translation tool at Google you can understand most of the text. It works!
http://www.moxtone.com
Lot's of audio stuff but only a few pages in english, the rest are in croatian but you could always email the author.