Toslink was measured to have on average twice jitter of coax. It is because of additional conversions to light and back and relatively slow optoelectronics.
I have no clue how Toslink can improve your bass performance since it affects only jitter and jitter is basically noise in time domain. Lower amount of noise might create impression of anemic sound the way clean jazz guitar sounds less dynamic than distorted guitar.
Stereophile magazine presented jitter measurements in the article "Jitter Games" where they stated "Critical listeners agree that the Toslink sounds substantially inferior to coaxial"
You can also find jitter measurements showing twice more jitter for Toslink here: http://www.monarchyaudio.com/DIP4.htm
I have no clue how Toslink can improve your bass performance since it affects only jitter and jitter is basically noise in time domain. Lower amount of noise might create impression of anemic sound the way clean jazz guitar sounds less dynamic than distorted guitar.
Stereophile magazine presented jitter measurements in the article "Jitter Games" where they stated "Critical listeners agree that the Toslink sounds substantially inferior to coaxial"
You can also find jitter measurements showing twice more jitter for Toslink here: http://www.monarchyaudio.com/DIP4.htm