I have now filled my spdif with twenty ferrites, and it has worked VERY well for me, as well as the PoE DC power change.
Simon has banged on about ferrites for an age and as a result I added some onto my power cords, with little or no effect. For some reason I didn’t add any onto my spdif cable. The spdif being digital means that there are no negative effects to adding ferrites, as there can be adding them to analogue cables.
I have been battling edge for over a year and have my usual suspect files for testing. Over the year a fair few of them dropped off the list as different tweaks ‘solved’ those files' issues; there are multiple overlapping issues that lead to this ‘sound’.
One of the best tweaks is the PoE using certain CAT7 cables. This leads to a relaxation in what you hear that is profound, but it still left certain recidivist files, including my bete noire, ‘Thunder Child’ from ‘War of the Worlds’. The ferrite tweak has mainly sorted these files, or at the least substantially reduced the issue.
The theories as to this effect boiled down to two, one of which is BluDave specific, the other is RF pollution.
As a result of a thread elsewhere I decided to review my system housekeeping wrt there system component positioning. Basically my system is on three shelving systems, including:
ultraRendu / Iso Regen / SingXer F1 + assorted cables and LT3045 ......PLUS LPSU for my music system switch;
Pre-Amp / music system switch; and
Border Patrol SE DAC / R-Core DC30W used to power the SingXer
Other equipment is on two other racks.
ultraRendu (uR) / Iso Regen (IR) / SingXer F1 + assorted cables and LT3045;
Pre-Amp / music system switch; and
LPSU for my music system switch / R-Core DC30W used to power the SingXer / ZeroZone R-Core LPSU for uR & IR.
I also added ferrites to the DC Cables from the LPSUs.
The Effect - Initial Thoughts:
It is still bedding in, I heard subtle changes through the evening last night. There is no doubt that there is instrumentation that I am now clearly hearing that just wasn't heard by me before. Bit, the character of my system seems to have slightly shifted. Tonal density (OK, I am reaching for a way to explain in words what I am hearing!) appears to have reduced slightly, but the sound has opened out. It is easier to hear into the sound-field and follow what effects and instruments are doing. On the whole this is positive, perhaps there is some rock music that may suffer slightly, more listening required.
The Effect - Later Thoughts:
Well, I went to bed last night in high dudgeon and disgust, my system quality had taken a dive.
Sometimes changes can lead to tonal changes that raise instruments into higher relief, whilst not representing a genuine improvement; and, this is what I decided I was now hearing.
I stripped off all the small ferrites I had placed on my PoE DC Loops. The tonal weight immediately returned.
I decided to play Billy Joel, 'River of Dreams' - as I went to see him on Saturday. This is NOT a well recorded album and can be sharp in my system; this had been largely addressed by PoE and ferrites - not now. I did notice that if I added ferrites to the DC cable from the ZeroZone LPSU the issues diminished, but still not to the quality I had before.
In fact the main thing I noticed is that the feeling of relaxation that I had gained had lessened - DAMN.
So, what had changed?
1. LPSUs together on one shelf
.....could they be interacting?
2. Changed cable runs
3. DAC moved
.....My DAC had been sitting above my turntable. Now it was underneath and just above my BluRay player, AND far nearer a couple of power amps.
4. Ferrites added to DC on digital front and back end.
I removed all the ferrites from the DC cables
I swapped the LPSUs with the DAC, bringing the DAC further from the power amps and nearer the Digital front end.
Moving the LPSUs meant that the one powering my local switch needed a longer DC lead = PoE using a generic CAT7 patch lead.
As soon as I started playing 'River of Dreams' I knew the relaxed quality had returned ......phew!
......more listening under way.