Marantz compact Hi-Fi system with AirPlay, Internet radio, Spotify, Pandora, SiriusXM Internet Radio * Powerful 60 W x 2 channels (6 ohms, 1 kHz, THD 10%), Bi-amping 30 W x 4 channels (6 ohms, 1 kHz, THD 10%) * Front and rear USB inputs for iPhone/iPod and USB memory; built in Wi-Fi and diversity antenna * 3 line large OLED display for clear and wide view; controllable with new "Marantz Remote App" from iPhone/iPod Touch, iPad, and Android phone * Digital optical input for TV; Elegant, luxury, and classic design