I use this module in combination with a "Power supply module Dual DC LM317 T 12V 1.5A (Ref. 8424)"as an external PSU for an USB-Card. After installing the Ultracapacitor Module we could hear more details and the musicians were better to localise. Very nice!
I don´t give this module 5 stars because I tested the IAN CANADA UCCONDITIONER and it is even better. But it is more expensive too. So the Ultracapacitor Module really is quite a good choice if You don´t want to spent the money for the IAN CANADA module.