The Aiwa AD-A70 is a high-performance audio system from the brand Aiwa. It is a network audio player that offers a variety of features for audiophiles who demand exceptional sound quality.Some of the key features of the Aiwa AD-A70 are:1. High-resolution audio streaming: The AD-A70 supports up to 32-bit/768 kHz FLAC, WAV, and AIFF formats through its built-in DAC (digital-to-analog converter). It also supports DSD playback up to 11.2 MHz.2. Multi-room audio: The AD-A70 can be used as the hub for a multi-room audio setup, allowing you to stream music simultaneously to multiple Aiwa receivers using Chromecast built-in or third-party Hub.3. Alexa Voice Control: By adding the optional Amazon Echo Dot (2nd Gen) (sold separately), the AD-A70 can be controlled by voice commands via Amazon's Alexa Voice Service.4. Network connectivity: With built-in Wi-Fi, Ethernet LAN, and Bluetooth connectivity, the AD-A70 offers plenty of options for network streaming.5. High-fidelity audio performance: The AD-A70 uses advanced audio technologies, including diffusive surface construction and ART (Acoustic Resonance Technology) "Alumite" chassis. This results in a rich, detailed, and clear sound that truly brings your music to life.Overall, the Aiwa AD-A70 is an excellent choice for audio enthusiasts who demand high quality, features, and flexibility in their audio systems. Its combination of advanced audio features, networking capabilities, and multi-room audio support make it an ideal choice for audiophiles looking to create a sophisticated and versatile music setup.