Re: [SlimDevices: Audiophiles] MEASUREMENTS: Computer USB port noise, USB hubs and the 8kHz PHY Packet Noise

2015-06-01 Thread arnyk
Mnyb wrote: Ok now I've re-read interesting so the noise actually only appear with the combination of HT computer - Teac DAC - Emotiva preamp in HT bypass. Yes So this noise is not even there with the same DAC in normal use ? Or connected in some other way . Yes and yes. I've

Re: [SlimDevices: Audiophiles] MEASUREMENTS: Computer USB port noise, USB hubs and the 8kHz PHY Packet Noise

2015-05-31 Thread Mnyb
What I mean is that there are potential for further general sound quality improvement with a better gain structure ? When I had analog amps I used ones with variable gain settings on the inputs or attenuators . And as usual thanks for the interesting measurement and blog. Is the HT PC much

Re: [SlimDevices: Audiophiles] MEASUREMENTS: Computer USB port noise, USB hubs and the 8kHz PHY Packet Noise

2015-05-31 Thread Mnyb
Archimago wrote: A few more measurements on my system showing the benefits of that Corning optical cable with my noise-sensitive single ended analogue pre-amp input. Also thought I'd run a few hubs to see whether the 8kHz noise changes much... Still would love to get a hold of this USB

Re: [SlimDevices: Audiophiles] MEASUREMENTS: Computer USB port noise, USB hubs and the 8kHz PHY Packet Noise

2015-05-31 Thread Mnyb
Ok now I've re-read interesting so the noise actually only appear with the combination of HT computer - Teac DAC - Emotiva preamp in HT bypass . So this noise is not even there with the same DAC in normal use ? Or connected in some other way . I've was not sure that I understood this right .

Re: [SlimDevices: Audiophiles] MEASUREMENTS: Computer USB port noise, USB hubs and the 8kHz PHY Packet Noise

2015-05-31 Thread arnyk
Mnyb wrote: Did I get this right can you actually hear this ? It must be something a bit odd about the ht bypass input in your preamp ? Is it very high gain ? From the article: One could see the glass half full when we run into imperfections in the audio system. For example, it was

Re: [SlimDevices: Audiophiles] MEASUREMENTS: Computer USB port noise, USB hubs and the 8kHz PHY Packet Noise

2015-05-31 Thread arnyk
Archimago wrote: A few more measurements on my system showing the benefits of that Corning optical cable with my noise-sensitive single ended analogue pre-amp input. Also thought I'd run a few hubs to see whether the 8kHz noise changes much... Still would love to get a hold of this USB

Re: [SlimDevices: Audiophiles] MEASUREMENTS: Computer USB port noise, USB hubs and the 8kHz PHY Packet Noise

2015-05-31 Thread SBGK
arnyk wrote: Seems to shed a lot of light. It hopefully will turn discussion back to fact-based conversations. See Uptone are endevoring to produce their own measurements to counter some of the degenerate attacks from Archie Kruger Touch optimisations http://touchsgotrythm.blogspot.co.uk/

Re: [SlimDevices: Audiophiles] MEASUREMENTS: Computer USB port noise, USB hubs and the 8kHz PHY Packet Noise

2015-05-31 Thread Julf
SBGK wrote: See Uptone are endevoring to produce their own measurements to counter some of the degenerate attacks from Archie Kruger Then we can at least have a rational, fact-based discussion about the results, instead of having to resort to name calling. To try to judge the real from the

Re: [SlimDevices: Audiophiles] MEASUREMENTS: Computer USB port noise, USB hubs and the 8kHz PHY Packet Noise

2015-05-31 Thread arnyk
Julf wrote: Then we can at least have a rational, fact-based discussion about the results, instead of having to resort to name calling. Don't mention fact based or rational without expecting that it will bring all of those insults out of the woodwork! It appears to be how Placebophiles work:

[SlimDevices: Audiophiles] MEASUREMENTS: Computer USB port noise, USB hubs and the 8kHz PHY Packet Noise

2015-05-30 Thread Archimago
A few more measurements on my system showing the benefits of that Corning optical cable with my noise-sensitive single ended analogue pre-amp input. Also thought I'd run a few hubs to see whether the 8kHz noise changes much... Still would love to get a hold of this USB Regen and see what it