Gustard U16 - the first USB Interface featuring ESS USB chip
Jul 18, 2019 at 2:28 AM Post #1,052 of 1,697
Jul 18, 2019 at 5:39 AM Post #1,054 of 1,697
U16 still broken indeed, tried both firmware versions on Win10, PSA I2S to Audio-GD and AES to Aune S6. oh well, back to my SU-6
 
Jul 18, 2019 at 5:50 AM Post #1,055 of 1,697
I'm not the right person to ask technical questions as my knowledge is very limited when comes to both DDC and 10M clocks.

@PLGA
https://www.ebay.com/itm/Thermax-M1...Connector-bnc-m23329-3-02-04-3m-/181284224471 this is the 50ohm cable I used, nothing special, it was good spec with right price. All 50ohm BNC terminated cable should be good.

@FredA
All I know is to buy sinewave 10mhz and get a 50ohm BNC terminated cable.

@PLGA
https://item.taobao.com/item.htm?id=562829048294&price=998&sourceType=item&sourceType=item&suid=a2b59027-1faf-4267-8f29-237cdaca03ab&ut_sk=1.XEMZaGfWlBQDAEHOTBL+PfDM_21646297_1555954914018.Copy.1&un=60cd56bc61ed492f8a195baaa22d8f6a&share_crt_v=1&sp_tk=77+lMDVBMFkwN2VjUEjvv6U=&cpp=1&shareurl=true&spm=a313p.22.1w2.1028393709265&short_name=h.ebDDmj9&sm=a21880&fbclid=IwAR0-fOdS6gCk3dK0kbiIiecirNTNEv3n0HE4_le1wZkOy3q8hYqzvEGu4w4&app=macos_safari

https://www.amazon.com/FidgetKute-10MHZ-DISCiPLINED-Display-Frequency/dp/B07TFC7B6F/ref=sr_1_12?crid=2LLKQLJ1A6CE3&keywords=gpsdo+10mhz&qid=1563153967&s=gateway&sprefix=GPSDO+,aps,312&sr=8-12

@motberg
Luckily behind my system is floor to ceiling window, so I have no problem with signal and it has been very stable. It bounces between 9.999mhz to 10mhz and has not once dropped the signal, I have not attach the antenna permanently to the window, I will move the antenna away from window more inside of the room to test the signal strength.

Installation from U16 10MCLK to clock's 10mhz once signal locked on and change OSC from INT to EXT and viola.

@MrCypruz

I agree with you, I rather spend time enjoy music than fine tuning system, that's one of the main reason I bought the best integrated amp/DAC I could afford and don't have to worry about power cables, interconnects and etc.

I suggest anyone is one the fence, give it a try if Amazon offers money back guarantee. I got 10mhz clock due to a local user swear by it, and he was right, the improvement in my system is very noticeable, everything just sounded more clear and defined.

One problem I have encounter is Audirvana 3.5 with TIDAL HIFI after installation of clock, some songs will produce cracking sound, if I use Tidal's own desktop app and Apple Music, no problem at all.

To add some information here -

1) I received one of these and cannot get the GPS lock indoors (inside lower level apartment and 4 meters from the nearest window). I need about a 10M lead to the antenna so if I can find that I will advise the group.
2) I found a manual online, they suggest a clear view of the sky for best performance. Also interesting comments about performance vs. warm up time.
https://www.google.com/url?sa=t&rct...ttach=403461&usg=AOvVaw3ZQ-FwkItEVt5DSJeyohva
 
Jul 18, 2019 at 7:15 AM Post #1,056 of 1,697
It uses GPS satellites (which have highly accurate atomic clocks, and transmit that time) to get a stable reference.

Hm., what time? Orbital time isn't equal terrestrial time, it's a bit slower due to Einstein theory (atomic clocks located on satellites boards runs slower the same one located on Earth). So, satellits transmiting corrected time for Earth. What about a jitter during this Einsteins correction? :)
 
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Jul 18, 2019 at 7:52 AM Post #1,058 of 1,697
Hi Fred,
Care to share where and what kind you ordered? Thank you sir.
Got this but have no idea if any good (or if the OCXO inside is new but it should be as not mentioned otherwise), other than a favorable review on aliexpress and some graph on the ebay page.

https://www.ebay.ca/itm/2018-10MHz-OCXO-Frequency-Standard-Reference-2-CH-Sine-wave-1-CH-Square-wave/173448116014?ssPageName=STRK:MEBIDX:IT&_trksid=p2060353.m2749.l2649

Also got this to power it:

https://www.ebay.ca/itm/25W-TALEMA-...e=STRK:MEBIDX:IT&_trksid=p2060353.m2749.l2649
 
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Jul 18, 2019 at 8:00 AM Post #1,059 of 1,697
Thank you sir, much appreciated for that prompt reply. Waiting on your review as well.
 
Jul 18, 2019 at 8:07 AM Post #1,060 of 1,697
U16 still broken indeed, tried both firmware versions on Win10, PSA I2S to Audio-GD and AES to Aune S6. oh well, back to my SU-6
Hi Bro,
Care to share your findings? I am also thinking of ditching the Gustard and go with the SU 6. Just waiting till my DSP board for Termy gets in before I pull the trigger. Thank you very much sir,
 
Jul 18, 2019 at 8:30 AM Post #1,061 of 1,697
One thing I can say the new firmware does is adding usb 3 compatibility. And I have a Renesas 3.0 card with OSCON caps. When I needed to upgrade the firmware at first it needed to be plugged in an USB 2.0 port. Now I can update the firmware on the 3.0 Renesas card. But I only use the Gustard for mainly 16/44 max 24/96 as I have a lite dac 83 with PCM1704 R2R dacs. Sounds better now on AES (balanced spdif). No problems with i2s to Gustard X22 either.
 
Jul 18, 2019 at 9:38 AM Post #1,062 of 1,697
Quick update on the newer firmware(s)
In my setup - version 1.77 is super unstable - not fit for prime time at all.
I can only described as SKIPPY .........

Version 1.61 NFB - so far so good... on the older v1.61, any bitrate > 80 is choppy and unstable.
On this new NFB version... they seems to have iron the problem out....... this is based on my quick initial testing....
 
Jul 18, 2019 at 10:05 AM Post #1,064 of 1,697
Quick update on the newer firmware(s)
In my setup - version 1.77 is super unstable - not fit for prime time at all.
I can only described as SKIPPY .........

Version 1.61 NFB - so far so good... on the older v1.61, any bitrate > 80 is choppy and unstable.
On this new NFB version... they seems to have iron the problem out....... this is based on my quick initial testing....

What is NFB? Please explain if possible
 
Jul 18, 2019 at 10:36 AM Post #1,065 of 1,697
What is NFB? Please explain if possible

I have no idea also on what it stands for.
The previous version (released in Jan 19) was v1.61. It didn’t work out for me as it was too choppy on songs with bitrate higher than 80.

I use 1.41 as a fall back - sq was not as good as v1.61 but at least I don’t have choppy plackback.

Gustard released 2 new firmware versions via a fellow forumer today :
1) V1.61 NFB
2) V1.77

I’ve reported my initial findings on the 2 firmwares in the previous post. NFB may mean something - but I don’t know what it is.

Am only using i2s to a denafrips dac
 

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