TubeDriver wrote:
It certainly is. Good luck finding a Pi2AES, though.
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| Author: | Grover Gardner [ May 13th, 2021, 12:19 am ] |
| Post subject: | Re: WTB cheap Roon endpoint |
TubeDriver wrote: https://www.youtube.com/watch?v=zncAhs44sp8 That's very interesting. I'm a believer in the differences between USB cables, but I tried this at home. Now, I may not have done it right, but you only have to be off by one sample for the tracks not to cancel each other. |
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| Author: | TubeDriver [ May 13th, 2021, 9:08 am ] |
| Post subject: | Re: WTB cheap Roon endpoint |
So he seemed to address the issue of timing the tracks. I agree, any timing issue and the test is not valid. To be honest, I am surprised he got such a measurable difference. -25db down would definitely be audible. |
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| Author: | tomp [ May 13th, 2021, 4:23 pm ] |
| Post subject: | Re: WTB cheap Roon endpoint |
I was amazed while at Charlie's with the difference in USB cables. Jim recently lent me one of the cables we auditioned and I put it in my system and it again reinforced the difference that USB cables make. I can't think of a reason why that should happen but I do hear the difference. "Every day beautiful theory is shattered by ugly old reality" |
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| Author: | David McGown [ May 14th, 2021, 11:59 am ] |
| Post subject: | Re: WTB cheap Roon endpoint |
That was a fascinating video. It was surprising how much difference there was. Of course the leading/trailing edge of the square wave or pulse waveform is going to be impacted by the cable capacitance/inductance (rounding or ringing), as well as transmission line reflections. You are depending on triggers to detect a threshold voltage that constitutes a "1" or "0". I suppose this is more of a "jitter" issue, affecting the timing of when the change in state is detected. I was not expecting as much of audible difference though, that was very surprising. However I can say in my listening that USB cables have a significant audible influence on sound. David |
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| Author: | Roscoe Primrose [ May 16th, 2021, 10:45 am ] |
| Post subject: | Re: WTB cheap Roon endpoint |
If you want to build your own cheap endpoint, the Dell/Wyse 5070 thin client looks like a great start. Newegg has a bunch of different refurbished models available for <$200 with RAM & storage (OS only, not enough for music).... Roscoe |
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| Author: | Pelliott321 [ May 16th, 2021, 12:04 pm ] |
| Post subject: | Re: WTB cheap Roon endpoint |
waiting for a comment from Dave R on the USB cable test |
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| Author: | TubeDriver [ June 3rd, 2021, 10:01 am ] |
| Post subject: | Re: WTB cheap Roon endpoint |
Interesting video: https://www.youtube.com/watch?v=Jvu_doQfAI0 |
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| Author: | Grover Gardner [ June 3rd, 2021, 11:35 am ] |
| Post subject: | Re: WTB cheap Roon endpoint |
TubeDriver wrote: It certainly is. Good luck finding a Pi2AES, though.
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| Author: | TubeDriver [ June 3rd, 2021, 1:13 pm ] |
| Post subject: | Re: WTB cheap Roon endpoint |
I gather from the video that my Holo May DAC's USB implementation is so good that it is a non-issue. But still interesting that he can see such a difference in the DACs analogue output due to noise and jitter on input. Grover Gardner wrote: TubeDriver wrote: It certainly is. Good luck finding a Pi2AES, though. |
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| Author: | Grover Gardner [ June 3rd, 2021, 1:15 pm ] |
| Post subject: | Re: WTB cheap Roon endpoint |
TubeDriver wrote: I gather from the video that my Holo May DAC's USB implementation is so good that it is a non-issue. But still interesting that he can see such a difference in the DACs analogue output due to noise and jitter on input. Grover Gardner wrote: TubeDriver wrote: It certainly is. Good luck finding a Pi2AES, though. Yes, that was interesting too, about the Holo. |
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