The Classe SSP-800 is standout Home Theatre preamp with an excellent analog stage. Audio formats supported: Dolby Digital Surround EX Dolby Digital 5.1 Dolby Digital Plus Dolby TrueHD DTS-ES discrete DTS 3/2/1 DTS 96/24 DTS-HD High Resolution Audio DTS-HD Master Audio 24bit/32-192kHz PCM Post processing modes Dolby pro logic IIx DTS-ES matrix DTS Neo:6 Mono Mono plus Stereo (downmix) Music plus Movie plus Party. This unit has the upgraded 1.4 HDMI board with dual DSP chipset. See photos for SerNo and made in CANADA verification. Newest firmware, Ver 3.1.0 did 21 Oct 2016 installed. See Classe website for specifications and reviews. One owner. Pet free environment. Call 240-925-4356 if questions. Priced to sell.