Using toslink has a theoretical advantage in that there is no earth connection between the transport and DAC - thereby eliminating one source of jitter. But in practise toslink still sounds awful, in my experience, compared with any competent coax cable. The same recommendation to use toslink was (is) also made by Monarchy with respect to their DIP jitter reducer - but in practise the toslink sounds awful with the DIP too. Much as Bel Canto wish to believe their DAC eliminates the jitter introduced by a toslink cable, I remain sceptical.
