Distortion on coax stellar DAC input

I have not used my stellar dac for some time. While attmpting to use it as a dac allow thorough the coax input I only get very distorted sond. What am I doing incorectly?

Are you using a digital coax cable or a regular RCA cable? I ask because regular RCA analog cables can sometimes have this effect. You can use digital coax as a regular RCA analog cable, but sometimes not the other way around because coax has shielding the regular RCA does not. This may not be your issue. Hope this is helpful.