The Rialto 400 has been updated to combine its legendary high-powered, audiophile performance and features, with an input stage devoted to voice-enabled devices, such as Amazon’s Echo® or Google Home®. This allows super-fast, accurate signal-sense switching when you expect it, while going about your daily activities. The AudioControl Rialto 400, is a compact, high-powered amplifier with a built-in audiophile-grade DAC (digital to analog converter) designed specifically to provide greater performance and higher sound quality for all analog and digital systems, including Sonos® home entertainment systems. The Rialto 400’s amplifier delivers over 100 watts of power per channel into 8 ohms and 200 watts per channel into 4 ohm loads AND CAN ALSO ACT AS A 400 WATT MONO-BLOCK. It features a built-in high-performance Wolfson® DAC that drastically improves audio quality, digital and analog audio-systems can perform with better speakers across the home.