High-resolution music file playback, 4K Ultra HD Pass Through & an energy-saving Eco mode are just a few of the many advantages of the VSX-528. Leading the way in smartphone connectivity, this receiver is the perfect match for your iPod/iPhone/iPad or Android smartphone. With the USB (Universal Serial Bus) connection, you can play digital audio in high quality. On top of this you get Air Play, v Tuner Internet Radio, DLNA support & the Pioneer Control App for your Android or Apple device. When you have the Pioneer Control App installed on your mobile device, you are now able to stream your own music directly to your receiver without using an additional app.