I purchased an f3 earlier this week from The Cable Company ($149) and the results (out of the box) are nothing short of astounding! Plugging the F3 directly into my Cayin CS55-a integrated amp, has breathed new life into the system and the cable hasn't even burnt in yet. Most noticeable is the improvement to the low end. Previously, the bass was good, but now it's great! I've compared the F3 to the Cayin's stock power cable, a Signal Cable MagicPower cord and a Nordost Heimdall II power cord, which is 4x the cost. With the other power cords I "thought" I could tell a difference, but with the Forte I "can" tell a difference; it's very noticeable with my system (Cayin and Totem Rainmakers). I'm also using Ohno III speaker cables, which I highly recommend too. The f3 an Ohno cables are outstanding values!