Loud 'crack' before song plays

I have a pair of Magnepan MMG's and a Magnepan bass panel connected to a pair of Emotiva mono blocks and an Emotiva DAC.

I have a Blusound Node to stream music from Tidal.

The issue I am having is that before a song I select starts playing there is an extremely loud cracking noise, much like the crack of a whip. Sometimes it is more like a popping noise.

If I play an entire album, the noise only occurs before the very first song and not on subsequent songs.

However, if I play the "Related artists radio", the noise will occur before each song.

It is very distracting and annoying.

I have been told it is some kind of "handshake process" between the components.

Can anyone tell me what this noise is and is it possible to eliminate it?

Thanks!