Dear Spotifiers,

I use the Spotify function to play the music on my NAD or Sonos system (click on the icon (monitor/phone) and select the apparatus). The volume that will play on the external audio is depicted on the bottom of the screen and I slide it always to about 20%. This worked fine, but....

.... since a week or so, when a song is played at its desired volume on my NAD or Sonos, ANY button touched in the Spotify app will make the volume go to max. And with my 300 watt speakers this gives a shocking blast that almost kills my speakers (and heart). Sometimes, even just selecting the NAD icon will instantly put the volume on max. 

Please let me know what causes this and how it can be resolved. Also if this a bug on the Apple iPhone side.

Thanks!

Gerjon Zomer, The Netherlands