Avantree Bluetooth transmitter and receiver audio volume loss should be less than 5%, comparing with wired connection.
If you find the output volume via Avantree transmitter is very low, here is the check list:
- Is it connected to the right analog output connector? More details see - https://support.avantree.com/hc/en-us/articles/115004556143-New-Saturn-Pro-Connect-issue-Connect-to-TV-AVR-or-any-other-audio-source
- Is the output from the connector very low anyway? This can be tested by using the wired connection to test and compare.
- If none of the above reasons, pls contact email@example.com