There are several addon boards for Wee DAC to expand feature set:
- W-Output XLR – Balanced XLR output for W-DAC
- W-Output XLR Mute – Balanced XLR output with Mute relay for W-DAC
- W-Input+ Combo – Extra Coaxial and Toslink S/PDIF inputs for W-Input
- W-Input+ Combo XLR – Extra AES/EBU XLR and Toslink S/PDIF inputs for W-Input
- W-Input+ Combo BNC – Extra AES/EBU XLR and BNC S/PDIF inputs for W-Input