Gustard - Warranty Repair in the US?

Good to know.

I have one a 

• Gustard X26 Pro Full-Balanced MQA DAC Dual ES9038PRO LDAC USB/Coaxial/Optical/IIS XMOS HiFi Class A Decoder with Remote (Black)

and it was working great until just now and the optical wont lock onto the signal I changed the cords etc and nothing. I will keep checking but will probably need to send it back for repair. Very Very Strange it was working literally earlier today and now this.

@viablex1 Why are you using the Toslink connection at all?

from TV its just convenient  for me