In all my experiments with clock upgrades, and network tweaking, I have found the same thing as Wijnand, that the system can go 'dead' after a period of time, days, if not hours, depending on the configuration.
I always put this down to electrostatic build up. But maybe it was clock syncro issue? And when I think about it, there is like 5 clocks all within 2 feet of each other on the rack, and all these clocks are not mu-metal shielded like some high end components have, just exposed to one another.
Maybe this is an issue to be looked at?
I used to do clock mods to my Oppo, used as a pure digital transport. I had tried about 6 different clocks, TCXO and OCXO clocks. Interestingly the best clock of them all was a SAW clock (surface acoustic wave). I have never seen anyone in all of audio talk about this clock or consider its use for audio, except for a crazy Danish guy living in Australia, Joe Rasmussen. But it was better than the -130db OCXO I had custom manufactured from RFX.
Hi Agisthos, Thank you for sharing. What type of powersupply did you use? There's actually two things that I suspect that causes be the problem. One is clock synchro which actually is the effect and two is that the ethernet signal itself is so precise and well built that the signal itself is getting too aggressive. Think about a more pure blockwave with sharper edges instead of less controlled blockwave with smoothed edges. Clocks normally need to stabilize for some time the more it stabilizes the more trouble it becomes for the DAC. I think and I also have some measurements from Jaap that proves that the DAC clock is influenced.
Hi Wijnand
Well there was two power supplies. The LPS for the Oppo mainboard itself was a custom one built by a guy called Coris on the DIY audio forums. I had 3 different variants of his supplies and they got better and better. Before that I used various LPS's by oppomod.com which were also very good but not as good as Coris.
But for the SAW clock itself I ended up with a Terra Firma power supply by JLTi Custom Analogue, it uses Schumann resonance or some kind of audio black magic. Anyway its unique.
excuse my ignorance here, @wijnand,
regarding the ethernet switching, streaming, are we talking about tcp, udp? Just to be sure to have a good understanding of the whole thread.