Do upgraded LAN cables/purifiers/switch box make a difference. What is recommended, if so?

I agree to keep the digital path as simple as possible.  I feed my Eversolo DMP A8 directly from router with an above average CAT 6. Then SHORT Bluejeans XLRs to AHB2. From AHB2 to Focals 948 withe proprietary Benchmark cables. No cables for thousands of dollars but I have clean and noiseless sound.

I have not seen that much improvement $-for-$ with different Ethernet cables however one device has made a notable improvement and that's the Uptone-Audio EtherREGEN.  Installing it between my router and streamer (Innuos ZENith MK-III), I was able to instantly tell that the noise floor lowered, and fine details emerged in the music.  A more realistic portrayal.  Definitely the most sonic performance improvement $-for-$ I've had in my system !  Seems like a number of others in this thread also like the Uptone-Audio EtherREGEN too.  

Upgrading any of that will do absolutely nothing to the sound. Nothing. Anyone who says otherwise is lying. 

I love this thread, my only regret is that the board doesn't allow thumbs up.   We can dispense with the thumbs down, since we're all just having fun here.

 @tomrk