Spend your money however you want but I don't buy a word of it. Show me a significant improvement backed up by a rigorous double blind study and I will switch sides in a flash, but in the meantime I class it with all the other snake oil schemes designed to separate the gullible from their cash. As for the files, we have no way of knowing what caused any differences in them that you are hearing (or think you are hearing - are you listening blind yourself?).
Op conveniently ignored my oft-sited a/b test I posted way way back. I can't even tell the difference and I'm the one who made the edits. Op either needs to own up to being a troll (which I applaud) or be banned for being a lying shill.