Amazon Music Unlimited Dolby Atmos low volume thru Arc

I should add this issue occurs for me when listening to Channels via Amazon Music Unlimited that are selected from the Sonos app, but not when an individual track or album is specifically searched and selected.

I have the same annoying issue. Seems like a bug and needs to be addressed by Sonos!

Since Sonos might not have seen this thread, maybe you could contact them and alert them to the problem.

Experiencing the same issue here - but when pausing, then resuming the Dolby Atmos track sees the volume increase exponentially i.e. MUCH louder.

My feeling is that my system (also Arc, One SLs G2 Sub) has an issue when switching through Amazon's HD or Ultra HD tracks to Dolby Atmos.

Hi together,

Same issue here. 
Has someone already contacted Sonos?

I have spoken to Sonos, but it has been difficult to recreate the problem while on the phone with support. For me, it only occurs while listening to Amazon Stations (I inadvertently referred to Channels in an earlier post above, but I meant Stations). And it only occurs when it automatically transitions from an HD or Ultra HD track to an Atmos track. Unlike a specified list of songs found in Playlists, songs played in Stations are more random in nature, so it really isn't possible to select a Station and know in advance exactly when an Atmos track will be played after an HD or Ultra HD track is played. Of course, Stations do eventually repeat tracks but not always in the same order. So recreating the issue while on the phone with support is not straightforward.
 

Another quirky aspect (other than the “fix” of pausing and restarting an Atmos track to correct the volume) is that if a Station is playing an HD or Ultra HD track and I manually skip tracks (which is possible with the Amazon Music Unlimited subscription) until an Atmos track appears, the volume of the Atmos track will be fine, presumably because it was manually initiated versus normal autoplay.
 

For anyone that is also experiencing this problem please contact Sonos directly to report it. The fewer people that report it, the less attention it will get. This really ruins the music listening experience from my HT setup (which is my only Sonos equipment capable of playing Atmos) so I really hope it gets the attention it deserves.

Same here on Beam Gen 2. I have been complaining to Sonos support since December with no luck. I have sent a video to them today showing this issue. Let's see...

The majority of my Amazon Music listening has been Dolby Atmos only playlists that I’ve created.

Consequently, I’ve been able to recreate the low Atmos volume issue fairly easily using “My Soundtrack” station.

The following diagnostics submitted when the playing Dolby Atmos track was near silent.

Diagnostic - 1980618125 - Tones and I - Dance Monkey

Diagnostic - 1383364548 - Dua Lipa - Physical

Diagnostic - 1036342532 - Imagine Dragons - Believer

Will raise these with Sonos Support tomorrow.
 

Perhaps you can send a screen capture of your Queue or Playlist..

The Queue is not in use when the issue occurs. It only applies to Stations ie. Amazon Radio.

Spoke to Sonos who say it is “normal” behaviour as the radio stream switches between different codecs. Diagnostics show nothing is wrong.

I’ve sent a video of the issue to forward onto the engineers, but I wouldn’t expect a fix to be forthcoming anytime soon.