XMOS XU208 USB BRIDGES - THE LATEST GEN HAS ARRIVED!
Sep 7, 2016 at 11:53 PM Post #3,451 of 3,859

Duy Le

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  What I2S cable you guys are using with SU-1? I am guessing the quality of the cable matters.

I use this cable http://www.adl-av.com/products/cables/hdmi/
Some cheap cables may have issue with DSD.
 
Sep 8, 2016 at 10:27 AM Post #3,452 of 3,859
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  I've had the Singxer SU-1 for a while and have about 115-120 hours on it now, so I'll share my impressions. The unit replaced an AR-T Legato (original). The rest of my system is as follows:
 
2010 Mac Mini (8GB RAM, SSD, LaCie 5TB HD)>USB Cable>Singxer SU-1>PAD Aqueous Aureus Praesto Digital IC (BNC)>Eastern Electric DAC Plus (Dexa op-amps and modded)>Kaplan GS Mk2.5 ICs>Rogue Cronus Magnum (modded, with KT66s and NOS signal tubes)>Kaplan GS MKII SCs>Aural Acoustic Model B speakers. Furutech dedicated outlet, TWL PCs, and PI Audio Digi-Buss & Buss-Stop power conditioners.
 
On first hookup the SU-1 immediately conveyed a much blacker background and much more micro detail, image separation and powerful dynamics. It was also very dry, glassy, lean and, most noticeably, tight sounding, with a more constrained lateral soundstage although depth was increased. After 10 hours, the glassiness went away.  
 
On the plus side, the SU-1 conveyed accurate and extended bass, and prominent (but not overdone) leading edge transients. Trailing edge transients were just adequately long. The held note, however was slightly truncated, the midrange lean/recessed. 
 
At around the 40 hour mark the PS Audio LanRover arrived and was added. This provided an even blacker background, more prominent bass and a fuller midrange. Interestingly the Uptone Regen by itself did not improve the sound of the SU-1 (although it had made an unalloyed major improvement with the Legato). Placed after the LanRover the sound also deteriorated; placed before it, it added some additional needed fullness to the sound.
 
At this point it would be useful to mention that I could not get the SU-1 to consistently work with my longer (.75m) PI Audio USB cable: either direct from the Mac Mini or from the Mini to either the LanRover or Regen. The inexpensive included cable worked every time. Because it has ferrite cores on it? I don't know but it is strange because, as long as I used the included cable out of the Mac, I was able to use two short PI Audio USB cables out from the LanRover and/or Regen into the SU-1 without any problems. And yes, I checked that the longer cable worked on other equipment. I have a query into Dave Elledge of PI Audio to see what light he can shed on this.
 
It took around 70 hours for the tightness from the SU-1 to subside and the soundstage to open up but the leanness remained. Finally, at over 100 hours, the mid-range filled out and aligned with the treble and bass and harmony was restored.
 
To check on the effect of each piece of gear, I then removed the Regen and LanRover (individually and together). To my great surprise I preferred the sound without either of these units. They both added an overly weighty and bloomy bass and an artificial "hi-fiish" quality to the music. Without them the sound is very revealing, neutral and balanced: to the extent that it's made more obvious some pre-existing weaknesses in my system that need to be addressed.
 
IMO, the Singxer SU-1 is an excellent bargain.


Great review!  My experience with the similar Startech GB LAN USB extender is that using a LPS to feed the sender and receiver unit made a significant difference - as did using a BJC CAT6 550Mhz cable between the units.  You might want to try this, if you haven't already.
 
Sep 8, 2016 at 11:24 AM Post #3,453 of 3,859

classfolkphile

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I should have noted that I did use the BJC CAT 6 cable which did make a nice, though relatively small, difference. I also should have noted that utilizing the LanRover to move the Mac Mini out of the audio room also made a subtle difference: a bit more smoothness and a slightly quieter background. But ultimately - having limited funds - I decided that the money for the LanRover and a LPS would be better spent on upgrading my DAC. I've just ordered a Lampizator Amber II.
 
Sep 8, 2016 at 11:30 AM Post #3,454 of 3,859
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  I should have noted that I did use the BJC CAT 6 cable which did make a nice, though relatively small, difference. I also should have noted that utilizing the LanRover to move the Mac Mini out of the audio room also made a subtle difference: a bit more smoothness and a slightly quieter background. But ultimately - having limited funds - I decided that the money for the LanRover and a LPS would be better spent on upgrading my DAC. I've just ordered a Lampizator Amber II.


Thanks!
 
Sep 9, 2016 at 8:01 AM Post #3,455 of 3,859

r11bordo

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Hi,
I have just received the Singxer F1 interface and I can hear the same issues described by classfolkphile for the moment (just 2 hours burnt in). Regarding the dxio pro3z, the f1 sounds clearer with less dephness for the moment.
 
Sep 12, 2016 at 5:16 AM Post #3,459 of 3,859

occamsrazor

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Can someone kindly clarify something for me about the Singxer SU-1: Does it support DSD512 over the i2s output or only DSD256?
 
Sep 12, 2016 at 8:22 AM Post #3,460 of 3,859

ldp216

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So, can you use a data-only usb cable with the pro3z, if you power it externally? It'd be awesome if it was battery powered, too! And, then, if you used a dac that didn't require 5v usb bus power... that might make for a really good overall feed into your speakers or headphones.
 
Sep 12, 2016 at 10:32 AM Post #3,461 of 3,859

MHzTweaker

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  Can someone kindly clarify something for me about the Singxer SU-1: Does it support DSD512 over the i2s output or only DSD256?

 
No
 
Only DSD256, but.....
It does it VERY well.
 
In my opinion the extreme bit rate DSD sampling rates for the sake of higher bit rates is overrated.
 
There is still work to be done along the signal chain not to mention recorded source material.
 
http://www.head-fi.org/t/780385/gustard-x20-dac/900#post_12856296
 
Sep 12, 2016 at 11:21 AM Post #3,462 of 3,859

taz23

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  So, can you use a data-only usb cable with the pro3z, if you power it externally? It'd be awesome if it was battery powered, too! And, then, if you used a dac that didn't require 5v usb bus power... that might make for a really good overall feed into your speakers or headphones.

I was inclined to say it can be done, but I thought I should check...  
 
I just tried using a USB adapter that removes the power signal, and that causes the pro3z to be undetectable (even when it is powered by a 5v LPS).  So the answer is you still need the 5v for the handshake.
 
I am very impressed with the pro3z currently, but I have not tried SU-1 or F-1.  Anyone with these devices and the pro3z can do a brief comparison?  Many thanks!
 
Sep 12, 2016 at 12:19 PM Post #3,463 of 3,859

kazsud

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  I was inclined to say it can be done, but I thought I should check...  
 
I just tried using a USB adapter that removes the power signal, and that causes the pro3z to be undetectable (even when it is powered by a 5v LPS).  So the answer is you still need the 5v for the handshake.
 
I am very impressed with the pro3z currently, but I have not tried SU-1 or F-1.  Anyone with these devices and the pro3z can do a brief comparison?  Many thanks!

 
 
I have a SU-1 that's burned in and a pro3z that doesn't seem to be burned in yet w/ an ifi ipower 5v powering it. So far there is less simbalance w/ the pro3z and a tab more bass. But the SU-1 trumps it in every other regard. 
 
I'm sending the ipower back and getting a LPS w/ the same Talema Transfomer that the SU-1 has. Hopefully the pro3z pans out better sounding since it is the same ddc w/ 2xs the specs.
 
http://www.ebay.com/itm/131737843438?_trksid=p2055119.m1438.l2649&ssPageName=STRK%3AMEBIDX%3AIT
 
Sep 12, 2016 at 1:33 PM Post #3,464 of 3,859

occamsrazor

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No
 
Only DSD256, but.....
It does it VERY well.
 
In my opinion the extreme bit rate DSD sampling rates for the sake of higher bit rates is overrated.

 
Thanks, I'm making no judgement as to the different rates, just was looking for a clear answer as to the capabilities of the SU-1.
 
What really confuses me is the whole DoP thing with Macs that don't do native DSD. When using the SU-1 with a Mac that requires DoP, and the SU-1 connected to a DAC that can do DSD256/512... do you happen to know what would be the rate you can actually get?
 
Sep 12, 2016 at 1:58 PM Post #3,465 of 3,859

MHzTweaker

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Thanks, I'm making no judgement as to the different rates, just was looking for a clear answer as to the capabilities of the SU-1.
 
What really confuses me is the whole DoP thing with Macs that don't do native DSD. When using the SU-1 with a Mac that requires DoP, and the SU-1 connected to a DAC that can do DSD256/512... do you happen to know what would be the rate you can actually get?

 
Here is a snippet from the Shenzhen Audio page:
 
http://www.shenzhenaudio.com/singxer-su-1-usb-digital-interface-with-xmos-xu208-cpld-dsd256-dop.html
 
I service both PC's and Mac's in my business but honestly I do not use Macs for anything on a day to day basis
I would cull from these specs that only DSD128 can be done in DoP mode.
 
I personally own an SU-1 connected to a Gustard X20U DAC via  I2S (HDMI)
I do have a MacBook Pro on a shelf I could try this out with. I have never listened to music on a Mac so I'm not sure what software is involved in playing DSD  DFF files on a Mac.
 
Specifications:
Each output interface supports sampling rates:
PCM:
44.1KHz, 48KHz, 88.2KHz, 96KHz,
176.4KHz, 192KHz, 352.8KHz, 384KHz
(I2S support all sampling rate,S/PDIF support upper to 192KHz
DSD:
2.8 MHz (DSD64)-DoP, native
5.6 MHz (DSD128)-DoP, native
11.2 MHz (DSD256)-native
(I2S output support all DSD,S/PDIF,AES/EBU support DSD64 DOP mode)

Bits width:
the highest 32 bit over I2S output
The highest 24 bit over S/PDIF
Each interface electrical standards:
1.USB input socket is a standard USB-B type socket, USB power supply range 4.5V-5.1V;
2.RCA connector outputs standard S/PDIF signal,electrical level is 550mV (standard connection load),the output impedance of 75 ohms.
3.Power suppply input is AC 115V/230V,using TALEMA transformer.
 

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