I’ve been noticing lately that a number of Blu-rays in my collection have DTS-HD MA 5.1 ES tracks. I’d guess that most of these movies were originally released on DVD before Blu-ray with DTS-ES Matrix tracks which is why their Blu-ray releases retained the matrixes 6th back center channel. \n\nIf I set my receiver (Monolith HTP-1) to Native then it engages the Neural:X upmixer just the same as if I force Neural:X - they both output across all my speakers.\n\nWith that said, I generally use the DSU (Dolby Surround Upmixer) for all non-Object based sources. \n\nIs DSU capable of correctly extracting the matrixed back center channel from a DTS-ES Matrix track? \nIs Neural:X even capable of this? \nDo either DSU or Neural:X handle this better than one another? \n\nBonus question... does either DSU or Neural:X handle mono tracks better? I’ve also noticed that I have a number of Blu-rays with LPCM 1.0 or DTS-HD MA 1.0 tracks.\n\nThanks!