Distortion is now a thing of the past with Fusion DSP - The feed-forward limiter anticipates peaks in the audio and adjusts the gain to ensure a smooth, distortion-free listening experience at any volume level. An Industry-First: Apple AirPlay® Gone are the days where Bluetooth is your only on-board audio streaming option! Built-in Wi-Fi empowers users to seamlessly send high quality audio from their favorite music streaming services or playlists to the Apollo SRX400 via Apple AirPlay, just like modern home Hi-Fi systems.