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In Reply to: RE: Singxer SU-1 posted by beppe61 on May 19, 2016 at 23:58:19
Yes, I have looked at the U12 on the forum that somebody linked to in one of the recent threads here. Also the X12 I think it is. The U12 is certainly a lot of tech for the money, I was eyeing it too just before this F-1 thread started up.What is so good about the Talema transformers BTW? I saw them mentioned as an "upgrade" in numerous forums. I know nothing about them, except that at least one of the pieces of gear in my system uses them. I never thought they were anything but "cheap", you know, my usual "disdain" but acceptance for toroidals in hifi gear...but if you have to have them (and it seems we do these days), may as well have good ones. [Just to be clear, I have at least a dozen toroidals in my main system. I have 3 pieces of gear that *don't* use them. I get by...]
In a pic of the SU-1 internals, which I can't seem to find right now, I do recall it showed a Talema xfmr, which reminded me of people talking of them in mod threads, and kind of prompted my Q.
The SU-1 also uses *proper* 75Ω BNC connectors. You can argue the "validity" of that, but at least they're trying to do it properly from a theoretical/technical POV. It shows me they're paying attention to details, I like that. (It's surprising to me how often $$ gear uses 50Ω BNCs, makes me wonder about the other stuff they do...)
Edits: 05/20/16Follow Ups:
" Yes, I have looked at the U12 on the forum that somebody linked to in one of the recent threads here. Also the X12 I think it is. "Hi ! if i am not wrong the "X" units are the dacs also very very good for the money.
http://www.amazon.com/GUSTARD-DAC-X12-ES9018-384KHz-Decoder/dp/B00RCUC94Q
I took out some blood and i bought a X20U (still in the box).
http://www.amazon.com/product-reviews/B015R112XA/ref=acr_search_hist_5?ie=UTF8&filterByStar=five_star&showViewpoints=0
I hope i am done with dacs. Actually i have too many.
Hope one will work ok." The U12 is certainly a lot of tech for the money, I was eyeing it too just before this F-1 thread started up "
this is exactly my same feeling. For the price is very well built.
But considering that the F1 is just a little more i agree with your preference." What is so good about the Talema transformers BTW? I saw them mentioned as an "upgrade" in numerous forums. I know nothing about them, except that at least one of the pieces of gear in my system uses them. I never thought they were anything but "cheap", you know, my usual "disdain" but acceptance for toroidals in hifi gear...but if you have to have them (and it seems we do these days), may as well have good ones. [Just to be clear, I have at least a dozen toroidals in my main system. I have 3 pieces of gear that *don't* use them. I get by...] "
from what i understand Talema transformers are good quality.
The main problem with toroidal is that they are very "trasparent" to noise in the mains. Of course if you have good filters before or after the transformer is also fine. But EI type or R-core transformers have an intrinsic better suppression of spikes and noise coming from the mains. A better isolation.
If i am not wrong there are also isolation toroidal transformers but i am not an expert.
For me i prefer EI or R-core. I am sure that just replacing the toroidal with a EI type pays dividend especially in presence of noisy mains. Toroidals are the normal choice for high VA because they are more compact for same VA. I still prefer EI always.
But they are very heavy." In a pic of the SU-1 internals, which I can't seem to find right now, I do recall it showed a Talema xfmr, which reminded me of people talking of them in mod threads, and kind of prompted my Q "
I do not know. But i much prefer the Hydra Z solution with external power supply. Consider that transformers emit EMI even toroidal.
They should be always shielded from close circuits.
And which best shield that a complete separate box ?" The SU-1 also uses *proper* 75Ω BNC connectors. You can argue the "validity" of that, but at least they're trying to do it properly from a theoretical/technical POV. It shows me they're paying attention to details, I like that. (It's surprising to me how often $$ gear uses 50Ω BNCs, makes me wonder about the other stuff they do...) "
Well ... imho a brand that makes an excellent and cheaper product like i understand is the F1 it is very likely that makes also a better product for more money. Actually i do not know which of the two units has the best coax out. But again if you want the AES/EBU the more expensive unit is the only option. Very nice looking unit.
Good luck !
Kind regards,
bg
Edits: 05/20/16 05/20/16 05/20/16
I notice another product also sold by shenzhenaudio, coincidentally called the SU1, uses an R-core...gives me a warm feeling. :)
But yes, distancing the "noisy" large-signal devices (e.g. xfmr) from the small-signal devices is a good idea. I do like the idea of the xfmr plus mains rectification/filtering being in a separate box. That's what I do when I make stuff, I'm not suggesting it's financially viable in certain markets/price-points though.
It seems to me the pic of "our" SU-1 internals has vanished since yesterday. Of all the pics I saved, that wasn't one of them. So maybe they're changing the internals somewhat before release. I also now see some communication with Singxer where somebody else is apparently asking for the internal/external PS option that I mentioned earlier today.
It does seem that a potential clintele is turned off the F-1 because of a lack of packaging. Perhaps Singxer should just offer a small metal case as optional for the F-1, it would cost them almost "nothing" compared to what they're doing otherwise, and would make the product more attractive to some people.
" I notice another product also sold by shenzhenaudio, coincidentally called the SU1, uses an R-core...gives me a warm feeling. :) "
which kind of product is ? cant find it
" But yes, distancing the "noisy" large-signal devices (e.g. xfmr) from the small-signal devices is a good idea. I do like the idea of the xfmr plus mains rectification/filtering being in a separate box. That's what I do when I make stuff, I'm not suggesting it's financially viable in certain markets/price-points though. "
exactly what i have learned reading here and there.
Going with DC to the main unit is a good solution.
I can tell you that i have also a usb interface said to have good ADC and DAC but the smps inside is causing noise. I am sure that an external power supply would have been a much better solution.
May i ask you what kind of stuff do you make ?
" It seems to me the pic of "our" SU-1 internals has vanished since yesterday. Of all the pics I saved, that wasn't one of them. So maybe they're changing the internals somewhat before release. I also now see some communication with Singxer where somebody else is apparently asking for the internal/external PS option that I mentioned earlier today.
It does seem that a potential clintele is turned off the F-1 because of a lack of packaging. Perhaps Singxer should just offer a small metal case as optional for the F-1, it would cost them almost "nothing" compared to what they're doing otherwise, and would make the product more attractive to some people "
i can tell you there are guys that are very dedicated to test this things in good and revealing systems. Very passionate.
They are great testers. The fact that the manufacturer is willing to listen to their request is a great attitude.
I would wait a little and see the new version.
Thanks a lot again.
Kind regards,
bg
I just make small stuff. I can't compete, in any way at all, with what comes out of China these days for a very reasonable cost. So more often than not, all I do is PSs, thus my interest in new/better ways of doing them. Even the "oldest" tech part of them, the transformer, is still being modestly improved.
I agree. Some years ago the quality was so so.
But now i have seen great products for more than reasonable price.
I am not an expert but i read so many positive reviews.
Some dac boards, like the one in the link, are very very good indeed.
I am also obsessed with power supply.
They are very important for overall performance.
Thanks a lot again.
Kind regards,
bg
Hi again, I actually don't know a thing about that pictured *DAC*, even its description is a bit inaccurate/fuzzy (it's not exactly a USB converter, the way we call it).
It just came up as an "SU-1" when I was trying to find the internals pic of the *real* SU-1. And of course I noticed the R-core, it's not like you see a lot of them, though some of the popular SBT PSs use them. Again, would rather have a good toroidal than a crappy R-core...I think...depends on app. Still, nice to see 'em out there in affordable gear.
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