Steve N is right, but I want to share and support him in stating that the use of the W4S I2S input is a much better than the USB or bridge to S/PDIF.
I have enjoyed the W4S very much, but still found it lacking vs high-end vinyl until I put a CIA USB to I2S bridge between the Mac Mini and the W4S.
Holly Moley, 2D to 3D and all of a sudden I am listening to digital files one after the other. I bought the associated CIA power supply for the bridge and this eliminated the USB noise, solidified the 3D illusion (depth not only width), and I think improved the bass and timbre in some instances. I used a Harmonic Technology 1.4 HDMI cable. Also, the USB to the CIA is the W4S USB cable which was better than my previous Kimber USB cable.
Bottomline. I am grateful to Steve Stone for mentioning this I2S bridge approach for the W4S DAC-2 in a recent Absolute Sound. Fantastic.
I have enjoyed the W4S very much, but still found it lacking vs high-end vinyl until I put a CIA USB to I2S bridge between the Mac Mini and the W4S.
Holly Moley, 2D to 3D and all of a sudden I am listening to digital files one after the other. I bought the associated CIA power supply for the bridge and this eliminated the USB noise, solidified the 3D illusion (depth not only width), and I think improved the bass and timbre in some instances. I used a Harmonic Technology 1.4 HDMI cable. Also, the USB to the CIA is the W4S USB cable which was better than my previous Kimber USB cable.
Bottomline. I am grateful to Steve Stone for mentioning this I2S bridge approach for the W4S DAC-2 in a recent Absolute Sound. Fantastic.