It's not possible for the VU Meters to work when playing DSD files. Most other audio file formats get processed as PCM inside your Network Player. This allows us to extract the necessary information to power your VU meters. As your DSD/DSF files get passed straight through to the DAC to preserve audio quality, the VU meters don't receive that information, which is why they don't work on our Network Players.
This was a specific choice with DSD/DSF to ensure that the audio is preserved in the highest quality possible. The VU meters can be enjoyed whilst playing a range of other formats, including WAV, FLAC, AIFF and others.
The VU meters are available on the EVO 75/150, CXN100, EVO One and EXN100.