I noticed that I have a lower volume on Volumio with DSD files than with Flac files. The DSD volume is automatically set to 100%. If I listen with the computer on Windows these DSD and Flac Files have the same volume. What is the cause of the problem on Volumio?
DSD has -6dB.
??, -6 DB on Volumio?
In DSD the maximum intensity sound does not reach full scale, it is attenuated by 6 dB. If you read the technical regulations of EBU and others you will discover that in the real world the maximum signal must never be reached, it is said that headroom is needed.