Sjöström Audio
This is a webshop focused on DIY tube amps and accessories. The webshop is located in Czech Republic.
miniVreg, precision voltage regulator and other DIY stuff such as clock oscillators. A webshop is connected.
Martin van den Berg has modified his CD with a JSR03 super regulator. He has made a very good looking installation. The JSR03 is fully replaced by SSR01 from Sjöström Audio.
A nice service if you want nice looking but cheap business cards, of course nothing is for free but it's cheap.
Manufacturer of extremely high class ADC's and DAC's. Crystal (Cirrus Logic) ar world leader but AKM is breathing in their neck...
Bengt Dahlberg has made an excellent description of how to build a "band"-tweeter. The article is in swedish but you may understand quite much since there are lot's of pictures. You can also send him a email.
FreePCB is a free, open-source PCB editor for Microsoft Windows, released under the GNU General Public License. It was designed to be easy to learn and easy to use, yet capable of professional-quality work. It does not have a built-in autorouter, but...
Very nice looking surface mounted power amp modules. You can also find a digital crossover filter. He sells kits.
DIY stuff such as Tent shunt regulators, loudspeaker elements, tube amps. products from NewClassD such as regulators, discrete opamps, soft start.
This Dr. Jan Meier has a couple of interesting and nice looking designs, a headphone amp with crossfeed and a power amp built with 44 pc. of opamps! Cool!
High-End hi-fi company based in South Africa with a focus on fine workmanship and a bent for the minimalist.