The AV 20 is a home cinema preamplifier processor that handles up to 13.4 channels, with no built-in power stage. Decoding covers Dolby Atmos, DTS:X Pro, Auro-3D, IMAX Enhanced, 360 Reality Audio and MPEG-H, with DTS Neural:X across 13 channels. Audyssey MultEQ XT32 calibration measures the room with the supplied microphone, and an upgrade to Dirac Live is available as an option.
The analogue stages rely on monolithic HDAM-SA3 modules in a current feedback design. A toroidal transformer, a copper-plated chassis and a clock jitter reducer complete the construction. Pure Direct mode and gold-plated RCA terminals are also part of the specification.
The multichannel pre-outs come as 15.4 on both RCA and balanced XLR, ready to drive separate power amplifiers. Four independent subwoofer outputs, on RCA and XLR, handle the bass, and bi-amping is assigned through the pre-outs. Three DC trigger outputs, the IR flasher input and the Marantz Remote Bus switch the connected components on together.
The seven HDMI inputs accept 8K/60 Hz and 4K/120 Hz at up to 40 Gbps, with HDCP 2.3, and three HDMI outputs, one of them for a zone, serve the TV, a projector and another room. eARC picks up the TV sound, and Dolby Vision, HDR10+, HLG, ALLM and VRR pass through unchanged. The HEOS platform, AirPlay 2, Spotify Connect and Roon Ready handle streaming across three multi-room zones.
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