Based on the legendary Carlsson speakers from 1974, Analog Class-D amplifier with 100 watts of power, 6.5-inch woofers, and with neodymium tweeter offers a great sound. Frequency range: 28 - 20000 Hz, Bluetooth 4.0 LE, WIFI, Ortho Play software remote app available (iOS and Android), Compatible with Apple Airplay, Spotify Connect support. Optional expandable with 2nd unit for stereo operation, optical digital input, Analog line input (3.5 mm), Weight: 7,5 kg, Dimensions: 262 x 272 x 262 mm. Comes in red finish.