NuForce - AVP-18 - Preamp/Processor Four (4) HDMI inputs and one (1) HDMI output employing high-speed switching technology Digital Audio SPDIF Coaxial Inputs: 2 Digital Audio TOSLINK Optical Inputs: 2 Audio Outputs: analog RCA x 8, SPDIF x 1 Home theater preamp/surround sound processor for digital sources