I have the RS400, used with the Linker to allow DI use and prevent auto-switching to Gamma D. I have an older Philips BDP-7501, which outputs HDR, and have custom gamma curves that I've tweaked for my room. They're decent, but probably nowhere near what Gregg probably created for you.Hey folks...
TL;DR - HDFury Linker vs UB820 upgrade?
Have had an RS400 for about a year now, professionally calibrated by Gregg Loewen. He set up a separate calibrated HDR custom picture mode with custom HDR gamma/EOTF and BT.2020 color space. So I assume my tone mapping is about as good as it’s gonna get.
It looks absolutely wonderful with SDR and HDR content, BUT the Gamma D gremlin annoys the living [email protected] out of me as does the long HDMI sync times when switching signal formats.
I have an Apple TV 4K which I use for all streaming, and the above noted annoyance is such that I have the ATV4K set to output 4K/60 SDR all the time. I feel the only thing I’m losing with streaming content is the wider color gamut (ATV seems to output 8bit REC709 color when set this way). But a small sacrifice for avoiding gamma D and 10 second black outs when the signal changes.
I also have a Sony X800 4K BDP. I think it has terrible HDR>SDR tone mapping, so I let 4K HDR discs play to my calibrated JVC. But then gamma D makes me batty. And when I start a movie I have to pause because the movie starts before the HDMI resyncs and I hear sound with no video.
I came across a deal on a HDFury Linker for $100 and was going to grab that to strip the HDR flag (solving Gamma D issue) but then I wondered if instead i should invest that into upgrading the Sony X800 to the Panny UB820. Then I could let the UB820 output SDR+BT.2020 with 4K HDR discs. No more gamma D, but I’m trading the custom calibrated tone mapping of an elite calibrator for the processing in the Panny UB820.
Since I’ve got the ATV4K working without issue for all my streaming needs, my primary concern is reducing annoyances with 4K HDR disc playback.
If it was a perfect world, I would output the same signal format to my PJ all the time so I never have to worry about switching picture mode or gamma or waiting for black screen to resync but I can’t afford a Lumagen. But maybe I could get close with the Linker’s capabilities or the UB820 processing?
Curious to get some feedback from fellow owners who’ve been down this road on the pros/cons of the two approaches? Seems like either way Gamma D is resolved, but is there anything I’m not considering which could tip the scales either way?
But the 15-20 second sync problem remains, and I don't think either of your solutions would have much difference. If I put in a Blu-ray, there are various changes that require a new HDMI handshake, and there doesn't seem any way to avoid that. I tried to set my AVR to only output 4k/24Hz, but that didn't work. The menu systems are usually 60Hz, and it just passes that through, so that really doesn't help.
I would assume the same would be the case with the UB-820, so it wouldn't have any benefit as far as fewer or quicker handshakes. Whether or not you would prefer SDR-2020 from the UB-820, compared with HDR and your Custom Curves, you would just have to try and see.
Personally, if your curves are working very well, and you're happy with them with a variety of UHD content, then I would just spend the $100 for the Linker, and save perhaps for a next generation projector down the road.
My $.02 anyway.