Help & troubleshooting for channels on your Roku device, including adding/removing channels, logging in to, authenticating, or activating a channel, channel-specific playback issues, assistance contacting channel publishers to report issues, and adjusting channel-specific settings.
I've nevre had this issue with my Roku. But on my Nexus Players it has been an issue since day 1. The Sling Player volume on Nexus Player has to be turned up double or more, to get the same level of volume output.
I've noticed it, but don't mind it. Remote control to my AVR can easily increase the volume, just as it can decrease the volume on channels "too" loud (eg, Slacker).
Speaking of volume issues, I really don't like how some go extra loud. SiriusXM starts out 2-3 times louder than other channels. Newsmax TV, One America News and to a lesser degree CBSN are all louder than most other channels, ESPECIALLY for advertising or breaks :x .