IAN CANADA UCCONDITIONER Ultra Capacitor Conditioner Board 5V - reviews - There are 2 reviews.

Pay close attention for supercapacitor soldering.
Very good product. It transforms the power supply at a higher quality level, with a better sound quality (if the audio circuit is equally audiograde). Pay attention to the supercapacitor soldeing because their mass joined to the large soldering area need for a powerful soldering tool (at least 80 W, but i suggest also 100W) and a good practice skill. I also suggest a liquid flux made for electronics.

Difficile a souder
Ce truc est une véritable catastrophe a souder! Prévoir un fer puissant... et même avec ça c'est pas simple.