Yamaha CD-S300sourcefeedsWiiM Ultrasource
Used together in 1 real system
Strong match
Yamaha CD-S300 + WiiM Ultra is a strong match — no compatibility concerns worth flagging.
What the compatibility check found
Physical Connectivity
Pass✓ Products have compatible connections: RCA, Optical, Coaxial
Balanced/Unbalanced Connection Matching
Pass✓ Perfect connection match - both use Unbalanced (RCA)