Stream Your Audio Wirelessly:Add wireless / network streaming capability to your passive speakers and active subwoofers.Add A50+ Amplifier to your current home stereo system and Wifi network then stream your favorite audio without any compression over wifi and Airplay 1. POWERFUL HQ SOUND: A50+ class d digital amplifier is capable of delivering 50W per channel at 24V/4 ohms and 35W at 24V/ 8 ohms. It is paired with an internal DAC that supports up to 24bit/192kHz decoding to provide high quality sound quality to your speakers.