Panasonic DP-UB420

Read a number of reviews, this had some of the best due to its video & audio output from Standard or 4K.
Easy to setup - just go through all the menu items to make sure you haven't missed any that may compromise output, connected to a recently purchased 65" 4K UHD TV without issue and we had liftoff !!
Played .mkv files from the NAS without any problem - stunning to see a 1080p BR in 4K, so much detail.
Next we tested with the Mad Max Fury Road 4K UHD HDR version - all I can say it WOW what an experience. The picture was absolutely stunning with vibrant colours, great audio - a true cinema experience in the home. Now to go through all the .mkv files and do some binge watching to see them in their new glory.
Plenty of Video & Audio outputs provide future proofing so you can use it now with an older style Receiver (no HDMI input/output) but have the knowledge that when you upgrade your receiver this unit will still be there to provide its exceptional output for your new equipment.

I bought this to experience 4K video on my 4K TV - Love it !
I did a bit to research before buying as I have a receiver that the original Bluray Player was connected to (it has a Hi Def pass through) and wanted the best bang for my buck, and I didnt want to go out and spend thousands because I would need a new receiver with a 4k Pass through. there are only a few 4K players that have dual HDMI outputs, one for 4K video the other for Audio output. Installation and setup took minutes, was simple and relaxing. I have a number of Panasonic devices and had NO issue tuning the remote to a "separate chanel" so it wouldnt interfere with the other devices. I was watching my first 4K Bluray 20 minutes after I got home.
The unit has an RJ45 network socket and has wifi connectivity. it can be used to access Netflicks Stan etc etc.
Great picture and quiet operation real quality & Value
On the down side, the instructions for "tuning the remote to a different channel" were online and a bit fiddly but doesnt detract from the great product !