Hi @markbytes
Welcome to the Sonos Community! Apologies for the delay in responding.
When Alexa thinks you are giving a command, the volume of anything currently playing is reduced. This is referred to as “ducking”. Once you finish giving a command, however, the ducking should end and you should hear playback at the set volume once more. If this is happening after a voice command is executed, however, then it’s likely not ducking that you’re hearing. While ducked, the larger LED light on the top of one of the speakers will be brighter than normal.
So, if this does appear to be ducking, then I recommend you do what you can to reduce background noise near the speaker - if present, it may make the speaker listen for longer than is needed.
If it doesn’t appear to be ducking, then I recommend you get in touch with our technical support team, who have tools at their disposal that will allow them to give you advice specific to your Sonos system and what it reports about the situation - the sources of any volume changes are recorded in the system logs.
I hope this helps.
@markbytes
Perhaps also check/ensure you do not have follow-up mode enabled on your Sonos devices as that may cause the speakers to ‘duck’ their audio for longer too. Also ensure you do not have other Sonos or echo devices in the same Alexa ‘enabled’ group that have follow-up mode enabled.