I have a roku ultra and have had it about 2 years. It has always worked fine or if it stuck I restart to solve the problem. This one is kind of unique. It works fine on some apps like Hulu plus live, but netflix, hbomax, and prime all have this issue. When playing you hear the music and sound effects but voices are practically non existent. Now this is connected though an very High end onkyo av receiver and it always has been. No settings have been changed on the receiver or the roku. I have done power down reboots on my entire system and no luck. This problem is not an issue on any of my other roku devices. Any help would be appreciated.