Don't underestimate the importance of a TOSLINK fiber optic cable in your system, be it stereo or multi-channel.
In fact, in the case of digital cables, the containment of the so-called jitter is fundamental, namely timing errors (or clock errors, called in English).
A low quality cable indeed introduces considerable delays in the path of the laser, causing errors and bad interpretations by the circuit in charge of converting the signal from digital to analog (the DAC). All this translates into a flatter, less articulated and intelligible sound.
High purity fiber with lower dispersion.
Low-jitter (digital synchronization errors) Very low jitter for a more intelligible and refined sound.
Finely polished optical interface
Type: multi-fiber conductor.
Cover: red-black sock.