LS50 Wireless fail, or is old gear that good?

After ready so much positive info on the LS50W, I gave them a try but was massively disappointed compared to my (much) older gear.
I set up the LS50's via Ethernet and WiFi playing HiRes files from NAS and Tidal via Roon, then compared the same tracks via WiFi to Roon on an iPhone>Dragonfly Red>ARC SP9 (1987)>Threshold amp (1980's)>Martin Logan Aerius i (1999). Wasn't even close.
Especially on female vocals, the sense of realism, timbre, air, etc was notably superior on the old system. I played around with the KEF DSP, room placement and even switched rooms.I really wanted the KEF's to work, but no luck.

So, am I missing something with the LS50W, or is the old stuff just that good?

IMHO, I think it is the difference between the active vs passive LS50. I have the passives and the are fast, transparent and musical with good bass when properly placed and mounted on stands. Powered by SimAudio Moon i3.3 in my second system. The class “A” biasing doesn’t hurt either. Using Morrow Audio SP6 and MA4 cables. 

See if you can trade out of the actives. That is why I went with the passive LS50 Anniversary model. You get to pick the amplifier and cables to YOUR liking not someone else’s idea of what sounds proper in your room with your ears and your music!
A friend of mine went with the Active Ls50’s and set up properly, they are amazing! They (Active Ls50’s) don’t seem to care what signal you are feeding them; they always sound pretty dang good. The imaging, timing and coherance are like nothing I’ve heard. I can’t figure out why the Active Ls50’s have this magic to them; initially I thought it was the dac but maybe it has more to do with the dsp?

It’s not the dac. I have the LS50W in a listening trial right now and they actually sound BETTER when I run my own external dac (Schiit Mimby) with Schiit Eitr (for jitter reduction) through the RCA-in on LS50W versus using the USB input on the LS50W from my computer. I can only conclude that the Schiit dac is superior to the dac in the actives. And also that the dac in the actives is very transparent. So maybe it’s the DSP in combination with the amplification in the actives that makes them sound so good (in a smaller room).

I also own the LS50 and was using them with a $1200 amp and a very transparent preamp and they sounded fantastic, but in my room the LS50W sounded a step better. I’m just not happy with only a 1 year warranty on the electronics in the actives. If something fails the entire system is unusable and I’d need to send them away for repair at who knows at what cost. I like having the control in the event of failure, and also upgrade capabilities, with individual components that can be replaced. As a result I might be going back to separate components but I’m still deciding.
I would caution anyone looking into the LS50W's to use them with filled stands if you can.  There was no comparison when I ran mine on heavy, filled, spiked stands with room to breathe vs having them on a dresser/desk close to the rear wall.  Everything was much more reinforced and coherent.  Unreal speakers for the price when set up properly. IMO the biggest fault with them is during lower volume listening, they lose a lot of their magic.
2-way concentrics have technical issues with doppler effect, but I’m not sure comparing it to an electrostatic panel with absolute insanely bad frequency response, decay, and dispersion measurements is a good basis for that judgment. It sounds like more like a expectation bias after being used to the sound signature of a speaker you’ve owned for a long time. After all, the directivity profile of an electrostatic panel is the polar opposite of a 2-way concentric, you literally can't have a bigger soundstage than a 2-way concentric and couldn't possibly have a smaller one than with a large electric static panel.
LS50W wireless function is awful, KEF stream hardly works which defeats the purpose of this speaker.
I have them setup as a 2.1 system With stands and sounds good.
Kef should be ashamed of this product.