Hate to say this, but not all fiber created equally, quality of FMC and what feeds it important. I've tried generic with stock switching power supplies straight into wall,no power conditioning, same feeding lithium ion battery pack, linear power supply on only one FMC, linear ps on both, different linear ps's of various voltages, a number of different power cords, all this with and without plugged into my BPT 3.5 sig transformer based power conditioner. Everything matters, I've heard rather thin, harsh sound with switching power supplies, dark with switching and linear into lithium ion. One lps with very nice power cords into BPT nice, two lps better, gives lower noise floor, most natural sound. I have order in on Sonore OpticalModuleDeluxe, should be available July, compare directly to generic, pretty poor internal power supply and clock vs. OM which has four linear power regulators and Femto clock.
While optical is the only network solution with 100% galvanic isolation, meaning noise proceeding it cannot be passed on, noise generated from within the last FMC in line can be passed on. On paper, substituting OM for last in line generic should result in lower noise floor, less jitter, equals higher resolving, more natural sound.
Also, FMC in itself cannot improve on any noise and it's deleterious effects created by streaming components PRIOR to FMC, Which is to say, every single link in chain critical for best streaming performance.
