It's been there since the beginning. The D-Premier's remote has a button for it by default.
Google for absolute phase or absolute polarity to see what it does, what it's for.
https://en.m.wikipedia.org/wiki/Absolute_phase
Google for absolute phase or absolute polarity to see what it does, what it's for.
https://en.m.wikipedia.org/wiki/Absolute_phase
PS Audio P3, Shunyata ΞTRON Alpha Digital and HC/Furutech power cables, Paul Hynes SR7EHD-MR4, DIY Roon Server & Roon Endpoint running AudioLinux Headless, Phasure Lush^2 USB cable, Audioquest Diamond RJ/E ethernet, Uptone Audio etherREGEN, Mutec MC-3+ USB, Shunyata ΞTRON Anaconda Digital XLR AES/EBU, Devialet Expert 250 Pro CI, Nordost Tyr Reference LS cables, Von Schweikert VR-5 SE Anniversary Edition, Anti-Mode Dual Core 2.0, JL Audio Fathom F112. More detail here.
The Netherlands
The Netherlands