The Gefen Auto Volume Stabilizer with Digital Audio Decoder is a high-quality volume stabilizer that delivers a mixdown from a 5.1 channel to two-channel using Dolby AC3 decoding. It actually makes the volume adjustments in such a subtle way that you won't even notice the change. Finally you can enjoy listening to the same volume levels when watching any TV program or during commercials, no matter what is on.
An additional feature includes a bypass button that allows the pass-through of unmodified incoming audio. Using Dolby Volume technology, the unit senses changes in volume levels and then maintains a steady volume level for any input sound coming from DVD, Blu-ray or other multimedia source. Listen to movies and TV shows easily without the inconvenience of continuously fiddling with the volume levels.