Dear Keetakawee,

I’ve sucessfully installed your fidelizer pro and have been using them for quite a while. All i can say is that your product made the most significant improvement aside upgrading main hardware such like amplifier, dac, or speakers/headphones. As of now i don’t feel or incline to use CD transport as much as the sound being played by my laptop sounds much more acceptable, but has clear edge as it provides me with more convenience.