I recently bought a pair of Zu Libtec speaker cables an a trio of Zu Bok power cords. I got the Libteks first, to see how they did between my Manley 300b amps and my new Zu Essence speakers. The Libtecs replaced a pair of Transparent networked cables. The Transparents certainly made a difference in my system. They accounted for a much lower noise floor: increased detail, smoother sound, greater realism and better soundstage. But, the Libtecs were much better in my system, much more holographic soundstage, no loss of clarity and better detail, better tonal accuracy, smoother upper midrange and deeper lower midrange, altogether better in synergy with my equipment. A couple of weeks later I connected the Boks to my Manley Neo-Retro 300b amps and one to my Manley Shrimp preamp. They further dropped the noise floor, deepened the soundstage, and my system acquired a sense of spooky realism. I intend to get some Mission interconnects to place between my upgraded VPI Scout and Linto phono amplifier, also between the Linto and the Shrimp. I don't know what to expect on that change, but if they meet up with the improvements that I got from the other Zu cables then I know I am going to be extremely pleased... I did not expect such a relatively inexpensive change in my system would produce such stark results to the positive.