Hello !
I like the band AIR, and I have listen to their songs with a lot of apps. With version 0.7 of Audirvana, with VOX and with Onkyo HF player, I can hear a gentle soft pulsing beep on the track “Night Sight” (can be heard around 2’20’’). Even on my iPhone built-in speaker. Unfortunately, on the latest version of Audirvana and on Volumio, I can not hear the gentle soft pulsing beep 
Should Volumio render the gentle soft pulsing beep ?