Denon S-32 Internet Radio with Built-in Speakers and 2-Alarm Clock (Discontinued by Manufacturer) Wi-Fi wireless network compatible - 802.11b/g 20 watts total power output (10 watts + 10 watts) at 4 ohms Input sensitivity/input impedance - 200mV/47k ohms Supported audio formats - AAC, MP3, WAV, WMA, FLAC Plays audio stored on PC or Macintosh computers