Hello Fsc71

I have been using the adapter for several months. I cannot complain about sound fluctuations during operation. Perhaps this is more a phenomenon of normalising the volume, which is a function in some TVs.
The only "problem" is that my TV cannot remember how loud the sound was before it was switched off. This means that it resets itself with every restart and then starts at full volume. However, this may also be due to the fact that I always disconnect the entire home cinema system from the mains.