I put this unit, a channel switch, a mini tube pre-amp, and a power amp together. This allows me to listen everything from my computer, my 1970 vintage tuner, 2000 tape deck, and Sony cd player (from RCA output or optical output) on my desk. I am pretty happy with the result with a modest investment.
https://www.amazon.com/Topping-Optical-Coaxial-Desktop-Decoder/dp/B08R5LB4PV