The Apollo Series amplifiers from Fusion Entertainment feature digital signal processing to enhance audio clarity and reduce distortion. Designed for Fusion audio systems, the amps are available in one-, four-, six- and eight-channel models, as well as a two-channel zone amplifier for zones not being amplified. With 150 watts of RMS power per channel, the compact amps are easy to install and set up using a wireless Fusion-Link connection. With the Fusion-Link app, you can tune the amplifiers from your mobile device. $179.99 to $949.99; fusionentertainment.com