Randomskk's photostream  

The PA module for AMPly. It's a class D thing. Sadly this version has a 22nH output filter inductor when 22µH would have been proper, so with the output filter in place it's a short to ground. Remove the filter and everything works nicely, though! It sounds really good.

The PA module for AMPly. It's a class D thing. Sadly this version has a 22nH output filter inductor when 22µH would have been proper, so with the output filter in place it's a short to ground. Remove the filter and everything works nicely, though! It sounds really good.

The power supply for AMPly. 22V at 2A and 3V3 at 1.5A, via two switch mode regulators. A nice chunky 100VA transformer steps down the mains (which has a very nice inlet with illuminated switch...) and two 4700µF 100V capacitors provide smoothing (and add chunkyness).

The power supply for AMPly. 22V at 2A and 3V3 at 1.5A, via two switch mode regulators. A nice chunky 100VA transformer steps down the mains (which has a very nice inlet with illuminated switch...) and two 4700µF 100V capacitors provide smoothing (and add chunkyness).

The power supply for AMPly. 22V at 2A and 3V3 at 1.5A, via two switch mode regulators. A nice chunky 100VA transformer steps down the mains (which has a very nice inlet with illuminated switch...) and two 4700µF 100V capacitors provide smoothing (and add chunkyness).