Sorry for late reply. When I tried TP Link Fiber Media Converters in my previous setup between my router and Aurender N20, adding fiber yielded to a dry and thin presentation. I used standard fiber optic cable between the converter boxes and a pair of Supra CAT 8 LAN before and after Fiber converter boxes. In comparison, ENO streaming system with their high-purity UP-OCC LAN Ag cables on both ends yielded to a much natural and engaging presentation. With ENO, the music flows effortlessly and there is this sense of righteousness across the spectrum.
IMO, until we get devices that are optimized for Optical Network on both ends i.e. routers and more streaming devices like Lumin, we won’t probably realize the true potential of fiber optic in our homes. I also believe most of these mass produced cheap converter and Ethernet switch boxes are not designed or optimized for audio :-)