This is a review of Poland based Iem manufacturer Customart’s latest TOTL product, F7U ( Fibae 7 Ultimate) which according to Customart is a fully reworked F7 for more musicality and engagement. I haven’t heard their previous model F7, so my comparisons would be based on Customart’s highly regarded old TOTL iem Harmony 8.2. Please note I am just a listener not a reviewer but will try my best to explain my impressions. I’ve spend a week with the F7U and paired it with both Sony WM1A and Cayin N6ii with R01 module. Most of my listening was done on...