Thank you for the suggestions.

AirDac could be possibility, but I cam across with this product X-DDC which has optical input and coaxial output.

Will this work with my DSP5200?

Thank You.

DSP: DSP6000.2 MKII, Reviver,
Audio: MS200, Super Linear Power Supply 12V1A, SotM ISO-Cat6
Core+Store: ROON on ROCK