XMOS XU208 USB BRIDGES - THE LATEST GEN HAS ARRIVED!
Apr 12, 2019 at 4:08 PM Post #3,856 of 3,862

Joong

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Does anybody have Singxer f-1 firmware of any revision?
I recently overwrite the f-1 firmware with that of SU-1 so that it does not work.
Please send me the firmware to revive my f-1.

Thanks in advance really :ksc75smile:
 
Sep 6, 2020 at 8:28 AM Post #3,859 of 3,862

carlmart

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I was looking at the thread beginning, and at that moment you could find different X208 XMOS converters, and if I am not wrong there was only one version with galvanic isolation from the first stage, and into the output SPDIF stage, and that was the F1 version.

Now I made a search and only Singxer seems to be only one offering the F1, at a very high price. Is that so?

People stopped experimenting with this USB to I2S converter, connecting it to a DAC?

Maybe because more and more DACs are including the X208 stage internally? My Topping D50 has one, and many others. do.

Is that the way to go now?

The other people offering X208 stages, with and without isolation, was DIYINHK, and it seems few people are buying that from them.

Is that a fashion that faded away?
 
Jun 22, 2021 at 4:07 PM Post #3,860 of 3,862

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any news?
 
Jun 22, 2021 at 4:59 PM Post #3,861 of 3,862

hmscott

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@Lolito - I was looking at these devices to get rid of USB source noise, specifically PC / Laptop noise:

SU-1 XMOS USB Audio Bridge, then the newer Singxer SU-2 USB digital interface femutal clock boat interface DSD1024:
https://www.head-fi.org/showcase/singxer-su-1-usb-bridge.21724/reviews

DIYINHK XMOS 192kHz high-quality USB to SPDIF with ultralow noise 1uV regulator
  • NDK NZ2520SD Ultra low phase noise oscillator
  • World's lowest noise 1.0uV regulator from Analog Devices or 0.8uV from Linear Technology
  • New DXIO PRO3Z uses the latest XMOS XCORE-200 XU216-512, it is equal to Two XU208 in One chip.
  • 4+2 layer PCB = total 6 layer PCB
Uptone Audio ISO REGEN
"The UpTone Audio ISO REGEN is the first device—designed specifically for quality music systems—to deliver both true high-speed galvanic isolation and extremely high signal integrity in a single, small and affordable package."
May 25, 2021: We are sorry to report that the very popular ISO REGEN (nearly 2,000 units sold) must now be discontinued. This is because the Silanna ICE09USB galvanic isolation chip was discontinued by the manufacturer two years ago and all stocks are gone. UpTone is developing several new USB products. One will be an improved USB REGEN (think ISO REGEN but without galvanic isolation yet with some enhancements) in same case size and similar price. The other two new USB products are VERY radical and advanced designs (drawing on some of EtherREGEN's tech), but those will be larger and at higher price points (similar to EtherREGEN price). Please STAY TUNED!

Fortunately, I found a less expensive solution, when I understood the problem was the Noise injected by the PC onto the USB power lines, I first looked for a USB "data-only" cable, but I couldn't find one, so I found the next best thing:

ifi iDefender+
https://ifi-audio.com/products/idefender-plus/

For me, I solved my USB noise problem by using the ifi iDefender+ to "disconnect" the USB Power lines. It interrupts the USB power, and allows injection of "clean" 5V power if your downstream DAC needs USB power to function.

All the "USB Noise" is gone when I put the USB A-A ifi iDefender+ in-line with my Topping D90 !!

Note, that each DAC we connect to the same noisy source will also need a USB Power line interrupter, like the Ifi iDefender+ and if your device needs USB power I found the ifi iPower+ is very quiet - I tried it with my USB powered SWL radios and they were silent - noisy PSU's make those radios unusable while charging.

I'll update later with more links...
 
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Jun 22, 2021 at 5:48 PM Post #3,862 of 3,862
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ifi iDefender+
https://ifi-audio.com/products/idefender-plus/

For me, I solved my USB noise problem by using the ifi iDefender+ to "disconnect" the USB Power lines. It interrupts the USB power, and allows injection of "clean" 5V power if your downstream DAC needs USB power to function.

Yup, that's our iDefender+ in a nutshell. Thanks for mentioning it :)
 
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