I remember one time I saw this ad that suposedly made it on the news it was so good. It seemed to be saying they had a way to master the guitar that took a month and nothing more. Now, they might have enough info to keep you reading for a month, but to master in a month? It's an advertising gimmick. It might do the trick, slow or fast, but none the less it's not what it's crocked up to be. That's where the risk comes in, you buy it and you might get screwed or it might just be the same as everything else. I wouldn't buy it myself, but that's just me. It's a bit too infomercial for me.