Sony's AVR ES7011 is a great upgrade for high-end audio, offering crystal clear sound, a powerful DAC, and a variety of features. It is easy to set up and has a long battery life, making it a great choice for those looking for a reliable and powerful home theater system. The sound quality is excellent, with a clear picture and clear soundstage. However, some users have experienced issues with the subwoofers not working properly and the video output freezing.