While I have not tried the aforementioned HiFi Cable products mentioned, I have been lucky enough to try the New Kid On the Block. I will say that this contact enhancer is absolutely phenomenal. I echo the sentiment and experiences of others who have tried it. Once you apply it, you will have to recalibrate your definitions of certain audiophile parameters. Everything that you thought your system was good at will soon seem mediocre by comparison. I’m not a scientist But I have ears and respectable system and this has been more than the icing on the cake. It will not change your system. It will reveal your system.
The first thing I noticed was my system gained much micro detail. The space between players was greater defined and the image much more lifelike. As you play more music, you will then start to notice increased soundstaging, a lower noise floor and a timbre that is really stunningly close to reality. The system loses the electrical aspect of the sound and becomes extremely pure and musical. This is what we all strive for with quality cables, vibration reduction etc, but this stuff has a very profound and distinct benefit. This is something special. When it is released, you will all be a happy bunch. My system has never sounded so incredible. Have patience friends. That’s all I got for you.