Linear power supply for the router.

[Jens Mortensen]

Does anybody have experience with the effect of af linear power supply for the router? Jitter is 2ms, which should be under the audible level.
Regards Jens,

 

[Gray]

I won't ask what you might expect the effect to be Jens.
Sorry but all I can tell you is that the vast majority of the people here wouldn't dream of changing the PSU supplied with their router.

Tell a lie, they might dream about it- because people have strange dreams.

 

[abacus]

Unless the power supply is faulty or underpowered, there will be no difference whatsoever.

Bill

 

[nopiano]

I’ve never tried, but perhaps like you, I’ve read that some folks experiment with this. The most probable benefit could arise if the typical ‘wall wart’ supplied injects quite a bit of noise into any nearby kit.

If you have a MC phono stage the huge gain can act like an antenna for nearby noise sources. So a less noisy power supply might be beneficial. However I can’t see how jitter would be affected, on which point I thought jitter was typically in the pico-second range so 2ms is surely significant?

 

[Jens Mortensen]

I’ve never tried, but perhaps like you, I’ve read that some folks experiment with this. The most probable benefit could arise if the typical ‘wall wart’ supplied injects quite a bit of noise into any nearby kit.

If you have a MC phono stage the huge gain can act like an antenna for nearby noise sources. So a less noisy power supply might be beneficial. However I can’t see how jitter would be affected, on which point I thought jitter was typically in the pico-second range so 2ms is surely significant?

Well, I measured the jitter by means of an application measuring netspeed. I think intuitively, that 2ms is a lot, but have no comparison whatsoever. I have read, that packet loss occurs at jitter at >15ms.

I ask, because I'm not sure. My primary, and my secondary, HiFi-pusher are not technicians and only tell me, what they themselves have heard. But thats is not good enough for me. I want to understand. I'm an electrical engineer, and somehow I intuitively have the apprehension, that the signal from the router is more or less independent of the power supply, unless the PSU is really low quality. But I dont know. That is why, I ask.

 

[Vincent Kars]

Well, I measured the jitter by means of an application measuring netspeed. I think intuitively, that 2ms is a lot, but have no comparison whatsoever. I have read, that packet loss occurs at jitter at >15ms.

Intriguing.
Would love to hear a bit more about what and how you have measured this.
If we talk DAC, today values below 1 ps (yes pico) are common.
However, this probably has nothing to do with network performance. If we stream over the network we simply fill a big buffer at the streamer so input jitter is very likely irrelevant.
Can you run a true J-test, measuring the jitter there where it counts and that is imho at the analog out of the DAC?
Just an example: https://www.audiosciencereview.com/...o-you-need-linear-power-supply-for-dacs.7021/

UpTone Audio EtherREGEN Switch Review

This is a review and detailed measurement of UpTone Audio's Ethernet "audiophile" switch. It is on kind loan from a member. The EtherRegen costs US $640. The EtherRegen as the name indicates, "regenerates" and Ethernet signal. This is a functionality that is provided with any Ethernet switch...

www.audiosciencereview.com

 

[daytona600]

PSU/Network/USB cables
£5 from tesco to $10,000+

Nordost QNet network switch & QSource linear power supply

www.stereophile.com

 

[Jens Mortensen]

Intriguing.
Would love to hear a bit more about what and how you have measured this.
If we talk DAC, today values below 1 ps (yes pico) are common.
However, this probably has nothing to do with network performance. If we stream over the network we simply fill a big buffer at the streamer so input jitter is very likely irrelevant.
Can you run a true J-test, measuring the jitter there where it counts and that is imho at the analog out of the DAC?
Just an example: https://www.audiosciencereview.com/...o-you-need-linear-power-supply-for-dacs.7021/

UpTone Audio EtherREGEN Switch Review

This is a review and detailed measurement of UpTone Audio's Ethernet "audiophile" switch. It is on kind loan from a member. The EtherRegen costs US $640. The EtherRegen as the name indicates, "regenerates" and Ethernet signal. This is a functionality that is provided with any Ethernet switch...

www.audiosciencereview.com

Ty Vincent.
Regards Jens.