I recently bought Fidelizer Pro after first trying the free version. And I am very pleased with it.

First of all the product was delivered very quickly. The program runs without any trouble. After I sent Keetakawee a mail to ask for suggestions for the program settings I got an answer almost immediately. NOW THAT IS CUSTOMER SERVICE!
The sound quality in my system improved noticeably. Two things are most striking. 1. I hear more separation between the different instruments. 2. The soundstage has become wider which improves the emotion I feel whilst listening.

So for anyone considering to buy Fidelizer Pro my advice would be: JUST DO IT, YOU WON’T BE DISAPPOINTED.

My setup:
I mainly listen to classical music and jazz
I use Audirvana to stream from Qobuz. And I listen to internet radio stations from my web browser.
Therefore I use a simple HP-laptop that is only used for streaming, I do nothing else with that computer.
From the laptop I feed a Musical Fidelity 192 USB to SPDIF-converter.
From the USB to SPDIF-converter I run a coax to my Audio Note DAC.

Kind regards from a happy Fidelizer customer.
Harm (The Netherlands)