hey Flg2001
I did study about the 170i a bit. IMO, solid state creates less noise and more stable compares to the traditional disk. Also even toslink and coax are transferring the same signal, toslink has to transform the digital signal into light > pass through the optical cable > transform the light back into the digital signal. It takes more steps than using a coax cable and that might be what makes people saying coax is a better digital interface than toslink in short length connection.
I did study about the 170i a bit. IMO, solid state creates less noise and more stable compares to the traditional disk. Also even toslink and coax are transferring the same signal, toslink has to transform the digital signal into light > pass through the optical cable > transform the light back into the digital signal. It takes more steps than using a coax cable and that might be what makes people saying coax is a better digital interface than toslink in short length connection.