Gustard U16 - the first USB Interface featuring ESS USB chip
Aug 2, 2019 at 12:51 PM Post #1,186 of 1,697
This seems to be an interesting project! Do you have any suggestion about the connector for the I2S out of this converter?

I'm not aware of any available pre-made connector for the i2s. I think you have to just add the wires yourself. I'll eventually do that since the DAC I am using currently is a Soekris 1021.
 
Aug 3, 2019 at 1:40 AM Post #1,187 of 1,697
I'm also a U16 owner, I dont get on forum very often though. I had a short talk with someone close to Gustard about 10M source.
1 C16 is coming, it will be OCXO
2 For 10M source low freq phase noise is very important, off the shelf GPS clock is not going to cut it.
3 If you cannot wait for C16, get some HP 10M OCXOs.
 
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Aug 3, 2019 at 7:44 AM Post #1,189 of 1,697
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Aug 3, 2019 at 9:04 AM Post #1,190 of 1,697
Shortly after I read about C16 here, I talked to the person whom has direct contact with Gustard and he is the one who directed me to buy the 10mhz clock. Base on his feedback, he doesn't think C16 is worth the price and the GPSDO clock I have in possession will do just fine against C16. Again, it's his word and I'm just passing it on, he did recommend to buy Cybershaft http://www.cybershaft.jp/a-products/ for what C16 is charging.

BTW, he did say Gustard has discard FW1.71, it will not be an official FW.
 
Aug 3, 2019 at 9:21 AM Post #1,191 of 1,697
Shortly after I read about C16 here, I talked to the person whom has direct contact with Gustard and he is the one who directed me to buy the 10mhz clock. Base on his feedback, he doesn't think C16 is worth the price and the GPSDO clock I have in possession will do just fine against C16. Again, it's his word and I'm just passing it on, he did recommend to buy Cybershaft http://www.cybershaft.jp/a-products/ for what C16 is charging.

BTW, he did say Gustard has discard FW1.71, it will not be an official FW.
I got a regular ocxo (not disciplined) and an ultra-noise psu off ebay for 200usd total. The ocxo has burned for a week, the lps for 5 days. I get a very subtle improvment in the highs which improves decays on cymbals and adds some crispness to the sound, generally speaking. One needs a great setup to hear such a subtle difference. But right now, i use a poorly assembled 50ohm cable (did not have a crimper) so things should improve with an upcoming properly assembled cable.

I am happy with the results given the small investment.
 
Aug 3, 2019 at 11:50 AM Post #1,193 of 1,697
C16 - phase noise is fairly poor which explains the low price. Seems to be worse than the Technics CG-10M. Mutec Ref10 is around -116. Cybershaft makes units with worse phase noise than Mutec and also makes units with better phase noise than Mutec. Cybershaft is currently sold out. Technics is $1500, Mutec Ref10 is $4000, Cybershaft is $1800 to $5500 with very limited quantities.

That being said, it remains to be seen whether the C16 does or doesn't make a cost effective audible improvement with the U16 for the given price.
 
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Aug 3, 2019 at 12:07 PM Post #1,194 of 1,697
C16 - phase noise is fairly poor which explains the low price. Seems to be worse than the Technics CG-10M. Mutec Ref10 is around -116. Cybershaft makes units with worse phase noise than Mutec and also makes units with better phase noise than Mutec. Cybershaft is currently sold out. Technics is $1500, Mutec Ref10 is $4000, Cybershaft is $1800 to $5500 with very limited quantities.

That being said, it remains to be seen whether the C16 does or doesn't make a cost effective audible improvement with the U16 for the given price.
Gustard quotes - 100db at hz. I think it's inaudible at 10hz and above. The noise level (vertical axis) is what matters the most at this point Using a bitching psu will have more impact than the ocxo itself, as long it is able to keep the power clean internally.
 
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Aug 3, 2019 at 12:10 PM Post #1,195 of 1,697
I know this is unrelated but you guys would know best, at least with the experience most of you have in converters.

Has anyone tried the Teralink X2? At $80 I'm very curious! Plus, Teradak being the wonderful company to provide us those amazing low cost, great performing LPS' they have (DC30W).
 
Aug 3, 2019 at 12:10 PM Post #1,196 of 1,697
Here's what I got for myself: Stanford Research PRS10 Rubidium clock
<-130 (10Hz), <-140 (100Hz), <-150 (1kHz)
bT8Q7yA.png
 
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Aug 3, 2019 at 12:15 PM Post #1,197 of 1,697
I know this is unrelated but you guys would know best, at least with the experience most of you have in converters.

Has anyone tried the Teralink X2? At $80 I'm very curious! Plus, Teradak being the wonderful company to provide us those amazing low cost, great performing LPS' they have (DC30W).
It is supposed to be good according to rb2013. The 30w unit is clearly better still according to rb2013. I can recommend this one without hesitation:

https://www.ebay.ca/itm/25W-TALEMA-Ultra-Low-Noise-linear-power-supply-DC-12V-2A-upgrade-your-device/143331836888?ssPageName=STRK:MEBIDX:IT&_trksid=p2060353.m2749.l2649

Get a shielded dc cable from ghentaudio (52$), it should help too. I just ordered one.
 
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Aug 3, 2019 at 12:32 PM Post #1,198 of 1,697
I know this is unrelated but you guys would know best, at least with the experience most of you have in converters.

Has anyone tried the Teralink X2? At $80 I'm very curious! Plus, Teradak being the wonderful company to provide us those amazing low cost, great performing LPS' they have (DC30W).

The X2 SPDIF Converter is very old. Avoid. I had one I think about 10 years ago. That's like 100 DAC years. I'm surprised they still sell it. I think FredA is just talking about the Teradak power supply with regard to rb2013, NOT the X2. Any of the cheap XMOS spdif converters will be better than an X2, which uses the old Tenor chip.
 
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Aug 3, 2019 at 12:48 PM Post #1,199 of 1,697
The X2 SPDIF Converter is very old. Avoid. I had one I think about 10 years ago. That's like 100 DAC years. I'm surprised they still sell it. I think FredA is just talking about the Teradak power supply with regard to rb2013, NOT the X2. Any of the cheap XMOS spdif converters will be better than an X2, which uses the old Tenor chip.
Yes indeed. There are better xmos converters for around 100$ or less.
 
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