Originally Posted by no_cure
By no means I wish to sound vain or conceited, and apologies if I mistakenly come across that way...
...but my Krell Evolution 707 serves dual purposes: 2 ch music and HT duties, and both are superbly rendered. Getting another processor just so I can handle Atmos and latest video standards and maintain same level of sound purity & quality will be a futile effort...I've tried to replace it, but nothing came close, unless I spend mega bucks. Such is the case with these boutique audio shops unfortunately.
Moreover, funny you mentioned it, but I've tried hooking up an HDFury Vertex back in Feb, and while the TV did get all the video the ATV4k sent it, my prepro never got any sound. Hence my HDFury experience was lackluster.
i'm in similar shoes... for me, after months of debate, i got the HD Fury AVRkey for $120 on sale at Monoprice and decided to give it a whirl. it works as advertised...with switches properly set, (for me, the middle settings), i send audio to my Emotiva Processor (not 4k compatible) which feeds my Creek amp and front channels, and sends 4k HDR video to my TV.
how long ago did you try the Vertex. the HD Fury devices are a bit quirky, but i have to say the HDFury folks will try to work with you on getting things right as evidenced by the HD Fury forum which is very active.
in the end, i have seen a reasonable upgrade in sonics on some movies now that i can get set the ATV4k to "Best" rather than forced to 5.1. but i can't say it's as dramatic a difference as it is in going from streamed (DD5.1 or DD7.1+) to the uncompressed audio on a BR disc. i have yet to buy myself a UHD/4k player, but i am leaning that direction as i hate having to compromise between choosing for video quality (ATV) or audio quality (BR disc). now that Redbox near me is renting 4K discs so i think it's time to buy a player to take advantage of that option. (i buy/own discs, but not enough to make the purchase of a 4K player worthwhile if i can't rent them)
anyway, if you can buy the HD Fury dongle from a place that allows returns (Monoprice), for example, i'd suggest giving it another try. it really should work for you.
[one test you can run, which i did when i was trying to debug something, is to make sure you can run the ATV4k through your Krell (1080p video of course) and make sure that works properly. this is also one way you can test to see if you think the audio quality upgrade is worth it to buy an HD Fury product]