Just for anyone still interested. I got my 12 ferrites today. Why 12, because it just made it over the free shipping limit.
I still think it belongs in this forum because no other dac reveals problems like this so obviously.
So first I put one ferrite core on each mains cable of my AVM monos and it was 50% better, then two made 85%, from 4-5 I did not hear a significant change anymore.
The last two I put on Dave‘s mains cable and right before the M scalers psu. That also made a difference. Never found the Dave too bright with headphones though only in combination with my mono blocks.
What I heard was a more depth, a lot smoother highs, softer bass, more timbre variation in general. I could also listen a good 5 db louder.
I was just trying to make a few listening tests, but then suddenly the music stopped and I was shocked that I got so lost in the music that I heard through the whole album and it felt like 5 minutes. Wow what a difference. Never had this musicality before on my speaker system, only with headphones straight out of Dave.
From now on I will use ferrites on every mains cable when ever another non Chord product is in the chain.
RF-noise… what a musicality eating beast.

I still think it belongs in this forum because no other dac reveals problems like this so obviously.
So first I put one ferrite core on each mains cable of my AVM monos and it was 50% better, then two made 85%, from 4-5 I did not hear a significant change anymore.
The last two I put on Dave‘s mains cable and right before the M scalers psu. That also made a difference. Never found the Dave too bright with headphones though only in combination with my mono blocks.
What I heard was a more depth, a lot smoother highs, softer bass, more timbre variation in general. I could also listen a good 5 db louder.
I was just trying to make a few listening tests, but then suddenly the music stopped and I was shocked that I got so lost in the music that I heard through the whole album and it felt like 5 minutes. Wow what a difference. Never had this musicality before on my speaker system, only with headphones straight out of Dave.
From now on I will use ferrites on every mains cable when ever another non Chord product is in the chain.
RF-noise… what a musicality eating beast.