Hi 08,
If you are looking for a TV with Active Voice Amplifier, I recommend starting with the Q7F TV Series. Otherwise, there are a few Settings adjustments you can make to enhance the audio.
Sound Mode: Navigate to: Settings > All Settings > Sound > Sound Mode
Auto Volume: This feature helps maintain consistent volume levels across content and input sources. Turn it on under: Settings > All Settings > Sound > Expert Settings > Auto Volume = On
I hope this helps!
~Samsung Advisor