Why do some audio files play at different volume levels on different bookshelves?
A. The Stream uses a dynamic volume normalization called AGC (Auto Gain Control) during playback for all bookshelves except music. This dynamic volume adjustment is useful for recordings that may come from varying sources and may not have consistent volume levels from one file to the next or even within one file. To avoid the user having to frequently adjust the volume, the Stream’s built-in AGC automatically raises or lowers the volume during playback to a pre-determined level. However, the AGC is not applied to music files because it is desirable to exactly reproduce the original music recording. Thus, if exact reproduction of a recording is desirable then place it on the music bookshelf.
