2021 discount Douk sale Audio USB new arrival Converter XMOS XU208 Digital Interface TOSLINK Coaxial DOP SPDIF Adapter DSD64 PCM192Khz online

2021 discount Douk sale Audio USB new arrival Converter XMOS XU208 Digital Interface TOSLINK Coaxial DOP SPDIF Adapter DSD64 PCM192Khz online

2021 discount Douk sale Audio USB new arrival Converter XMOS XU208 Digital Interface TOSLINK Coaxial DOP SPDIF Adapter DSD64 PCM192Khz online
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2021 discount Douk sale Audio USB new arrival Converter XMOS XU208 Digital Interface TOSLINK Coaxial DOP SPDIF Adapter DSD64 PCM192Khz online__left


Digital Interface

  • With micro USB input and TOSLINK optical / coaxial output (can output at the same time)
  • Support 44.1K-192KHz/16-24Bit sampling rate and DSD64 (DOP)

XMOS XU208

  • With 1000MIPS random access memory much higher than U8 (500MIPS)
  • More stable than Italian Amanero solution and supporting coaxial DSD DOP output

High Compatibility

  • Suitable for PC computer, notebook, android phone(OTG), set-top box, rock 64, raspberry pi and so on

Portable Design

  • Super mini size and light weight
  • Powered by USB, very convenient to carry and use anytime and anywhere

Packing List

  • 1*U2 USB Converter
  • 1*USB Cable
  • 1*CD Driver
  • 1*Manual

Douk Audio U2

Parameters

  • Audio input: micro USB
  • Audio Output: Toslink Optical / Coaxial
  • USB Chip: XMOS XU208
  • Working Current: 130mA
  • Dimensions: (L*W*H) 52*45*20 mm /2.05*1.77*1.38 in
  • Net Weight: 50 g / 0.11 lb

System Compatibility

  1. 32/64 bit Win 7, Win 8 and Win 10 systems need to install driver, you can download it from the CD driver or by scanning the QR code in the manual.
  2. Mac OS 10.6 and above, no need for driver.
  3. Linux with UAC2 compliant kernel uses the system's own driver. (Has tested on Ubuntu and Daphile systems, based on INTEL X86)
  4. In general, default supporting Android 5.0. And Android (4.2 and above) need OTG function. Recommend operation system below 5.0 to work with dedicated players such as Haibei players.

Douk Audio U2 Douk Audio U2 PRO Douk Audio Q3 Nobsound Q5 Douk Audio A10
Feature Digital interface; USB to Toslink optical and coaxial converter; XMOS XU208 Digital interface; USB to Toslink optical/coaxial/I2S converter; XMOS XU208 DAC; Headphone Amp; USB/Coax/Opt DAC; Headphone Amp; USB/Coax/Opt Bluetooth power amplifier; USB/Opt/Coax; 240W
Input micro USB USB (type-B) PC-USB/Optical/Coaxial PC-USB/Optical/Coaxial Bluetooth 5.0/RCA/USB/Optical/Coaxial
Output Toslink Optical / Coaxial Toslink Optical / Coaxial / HDMI IIS RCA / 6.35mm headphone output RCA / 6.35mm & 3.5mm headphone jack Passive speakers / Active SUB
PCM 44.1KHz,48KHz,88.2KHz,96KHz,176.4KHz,192KHz,16-24Bit 44.1KHz, 48KHz, 88.2KHz, 96KHz, 176.4KHz, 192KHz, 384KHz - - -
DSD 2.8MHz(DSD64)-DOP 2.8MHz(DSD64)-DOP, native / 5.6 MHz (DSD128) -DOP, native / 11.2 MHz (DSD256) , native - - -
Sampling Rate 96K/24Bit (PC-USB) 192K/24Bit (OPT/COAX) 24bit/192KHz (USB/Coaxial/optical) 192K/24Bit (USB/Coaxial/optical)
Douk Audio P1 Douk Audio X1 Douk Audio G3 Douk Audio M1 PRO Nobsound MS-10D MKIII Douk Audio EleksTube
Feature Bluetooth preamp; Headphone amp; Vacuum tube; Tone control; APTX-HD Bluetooth vacuum tube MM phono power amplifier Bluetooth stereo amplifier; Tone Control; 100W 2-CH Bluetooth amplifier; 320W high power; U-Disk; Tone control Bluetooth hybrid vacuum tube power amplifier; USB/OPT/COAX Retro Nixie tube clock; IPS Screen; Impressive display effect

Features & details

Features

  • U2 is a USB to Toslink optical and coaxial converter, suitable for PC computer, notebook, android phone(OTG), set-top box, rock 64, raspberry pi and so on, it can bring better listening experience than PC own sound card.
  • Adopting the digital interface of XMOS XU208 chip solution, with 1000MIPS random access memory much higher than U8 (500MIPS). More stable than Italian Amanero solution and supporting coaxial DSD DOP output.
  • With micro USB input and TOSLINK optical / coaxial output (can output at the same time), supporting 44.1K-192KHz/16-24Bit sampling rate and DSD64 (DOP), better signal process brings higher sound quality and Hi-Fi listening experience.
  • Using gold-plated coaxial interface, the contact internal resistance is smaller and the data transmission is more reliable. U2 is powered by USB, very convenient to carry and use anytime and anywhere.
  • Mini size with exquisite design, black and red aluminum cases look cuter and fashionable, very suitable for desktop digital players use.

Product information

Product Warranty: For warranty information about this product, please click here
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Product guides and documents

User Manual (PDF)
Installation Manual (PDF)
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Customer Questions

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Q: Mac book pro driver for Douk s/Pdif?

A: I did not need to install a driver for MacOS to get it to work. I am currently using it un…

P. Keith Muller | 7 months ago

Q: Can this be used between iMac and Sonos Playbar ?

A: Yes, tested and works with iMac Mini M1 and Sonos Playbar

jke | 4 months ago

Q: Does this work with an imac? it does not have a cd drive for the driver

A: Hello. It is compatible with Mac OS 10.6 and above, no need for driver.

Seller DoukAudio | 1 year ago

Q: Does this converter turn off the optical out when there''s no (or very quiet) audio?

A: No. The converter itself is powered on by the source device providing the signal output. T…

Dwayne C. Johnson | 4 months ago

Customer reviews

4.5 out of 54.5 out of 5
98 global ratings

Top reviews from the United States

Robert Blase
5.0 out of 5 starsVerified Purchase
Super - a true audiophile quality component.
Reviewed in the United States on August 23, 2020
The sound quality of this box is really excellent. I''m using it to feed 24/192 PCM audio from a Windows tablet computer to a Benchmark DAC1, using a glass optical cable. That particular DAC is very sensitive to the quality of its input. I was using a SMAKN CM6631 audio... See more
The sound quality of this box is really excellent. I''m using it to feed 24/192 PCM audio from a Windows tablet computer to a Benchmark DAC1, using a glass optical cable. That particular DAC is very sensitive to the quality of its input. I was using a SMAKN CM6631 audio interface, but I thought too much of the activity in the computer could be heard through it - particularly the beginning of each song was brighter and more forward than the rest because the player is using the computer a lot during that time. So I decided to try this box, and that problem is gone. The sound is uniformly good now.

I thought the imaging was a little smaller though, so I tried some of the changes that had made the Smakn box sound better - a shorter USB cable, and external power supply. I originally set up the Douk box using the USB OTG cable that came with the computer, and the longish USB cable that comes with the Douk. The OTG cable has an input for external power to avoid draining the tablet battery to run USB devices. Using that improved the sound, but only a little. Disconnecting the computer power (with the OTG cable, both power supplies are really connected) and using a short cable finished the job.

Unfortunately the Douk designers didn''t allow for external power for their box. The Smakn box has a separate power input jack and a switch to choose external power or USB power, which made it really easy. For this box, I had to wire my own USB plug. What I made is a USB "cable" that''s about an inch and a half long, with a micro USB male plug on each end, and a power wire coming out the side. The computer side is wired for OTG (pin 4 connected to pin 5), and no power (pin 1 not connected). The Douk box side has the power (pin 1 +) and ground (pin 5 minus) connected to the external power wire. The rest are connected normally.

Using this "cable" and an external linear power supply makes the sound really great for me. The images are normal size now, and depth and clarity are as good as I''ve ever heard. I do wish the designers had made this easier by putting a power jack in the device, though.

If you try this, I really recommend using a linear supply. Most power supplies these days are the switching type, and make a lot of electrical noise. Linear supplies use a transformer instead, and make less noise. I''m using a C-TON PW2-5 (5V 300ma linear, $16 at Digi-Key). It sounds VERY good. If your DAC has better jitter immunity than mine this may not make any difference, but it doesn''t cost much to try it.

Even if you don''t try the external power, it will probably be worthwhile to place this device right at the computer''s USB jack and use a standard adapter (with whatever connectors you need) to replace the cable. USB cables cause jitter on the signal, and pick up electrical noise too, so less is better, and none (just a short adapter) is the best.
16 people found this helpful
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mtnbrit
5.0 out of 5 starsVerified Purchase
no more Digi hat for me...
Reviewed in the United States on August 8, 2020
This little dongle is such a huge upgrade from the Hifiberry Digi+ on rPi under volumio/moode and mpd players in general. I was convinced the digi hat would have been a superior solution to USB, with its direct i2s signal path, but the reality is quite different, its... See more
This little dongle is such a huge upgrade from the Hifiberry Digi+ on rPi under volumio/moode and mpd players in general. I was convinced the digi hat would have been a superior solution to USB, with its direct i2s signal path, but the reality is quite different, its actually a bit crude. Issues I had included: nasty audio glitches between tracks when stopping or changing sample rate, spdif turning off when mpd is stopped causing DAC relays to click, 1-2 second lag in hearing changes when using software volume control under mpd, which is required as it has no hardware volume control.

The little U2 X208 USB dongle doesnt suffer from any of these issues and is overall a so much more refined solution in practice. The fact that it supports hardware volume control may be its best feature. Now there is no lag at all when making volume changes with my big USB knob on Moode. The volume curve implemented in the X208 is nicer than the software volume of mpd. Its a much finer control at lower settings, getting more aggressive after 50%. Also, the X208 keeps the spdif signal going constantly even when mpd is stopped, so the DACs say locked and no relay clicking. No glitches whatsoever when pausing or switching sample rates. I haven''t tested anything other than 24/32bit and 96kHz, and no DSD.

Im not golden-eared enough to notice a sound quality difference between the two. U2 sounds great, but so did the digi hat. U2 wins in smoothing out the usability issues, which adds up to a big deal and a win.

Possibly the best $39 I have spent on my system, next to the rPi4.
10 people found this helpful
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B Welch
3.0 out of 5 starsVerified Purchase
No Drivers
Reviewed in the United States on August 18, 2020
The unit arrived with a CD which was supposed to have the drivers on it. After jumping through flaming hoops to find a CD ROM drive, I found the disc to be blank. The printed sheet of paper included in the box also had a QR code printed on it which was supposed to link to... See more
The unit arrived with a CD which was supposed to have the drivers on it. After jumping through flaming hoops to find a CD ROM drive, I found the disc to be blank. The printed sheet of paper included in the box also had a QR code printed on it which was supposed to link to the drivers as well. That QR code was unreadable. After endless internet searching, I have come up empty on finding drivers. Duok''s website is worthless. Don''t do it.

Update:
Was able to get the drivers after emailing Duok from their website. Now have the proper driver running on my Win 10 machine and the product is functioning very well. Upgrading to 3 stars. This is a basic/typical product from a Chinese manufacturer who has not yet matured to take all aspects of quality seriously.
12 people found this helpful
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JohnQPublic
5.0 out of 5 starsVerified Purchase
Now this turned out to be very interesting....
Reviewed in the United States on April 7, 2021
I got the Douk to replace an older USB to Coaxial adapter that only did 16 bits. It turned out to be surprisingly good and I''ve been using it ever since. I have a nearfield rig set up on a table this way: a Samsung 32" TV, SMSL AD18 for an amp, Polk satellite speakers... See more
I got the Douk to replace an older USB to Coaxial adapter that only did 16 bits. It turned out to be surprisingly good and I''ve been using it ever since. I have a nearfield rig set up on a table this way: a Samsung 32" TV, SMSL AD18 for an amp, Polk satellite speakers with sub, and as interlopers, a Dell XPS 17 laptop and iPad Pro. The AD 18 was just the ticket for all the devices because it let me easily switch between sources or use Bluetooth, had power to spare and sufficient tone adjustments and DSPs to enable what ever volume dependent adjustments I needed to make. The immediate problem I had was that my 24 bit USB to Spdif converter was being used on another rig and the older one I was using, although having a very good tone, was only 16 bit and I had a sufficient amount of 24-96 and 24 192 music on my laptop that I wanted to be able to play… So I felt I needed a converter that would do 24-96 and 24-192s. So enter the Douk. I didn’t know what to expect but it turned out to be a good sounding replacement for my older converter. Now the AD18 has it’s own usb input but I never liked the way it sounded, so that’s why I’m using the Douk instead and sending the signal to the Coaxial in on the back of the AD18, which shares a port with the sub out. To do this you need a stereo mini to RCA female adapter and you plug the coaxial cable into the left channel. The right channel is for a sub out but my system doesn’t work that way so I don’t use it. So now I’m listening to 24 bit FLAC, sounds great…. but truth be told, although the Spek Analyzer can see it, I can’t hear any difference between 16bit FLAC and 24bit FLAC, even with my headphones.
3 people found this helpful
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shiver_me_timbers
5.0 out of 5 starsVerified Purchase
Android OTG to minidsp
Reviewed in the United States on April 29, 2021
Using this to convert Android USB audio to spdif digital to feed a Minidsp CDSP8x12 in a car audio environment. Tidal MQA streaming plays from Android (and iOS, I believe) without any other drivers, jailbreaking or odd USB settings. This unit can be powered... See more
Using this to convert Android USB audio to spdif digital to feed a Minidsp CDSP8x12 in a car audio environment. Tidal MQA streaming plays from Android (and iOS, I believe) without any other drivers, jailbreaking or odd USB settings.

This unit can be powered through your Android device, though I modified a USB-A to micro-USB cable so that it can be powered by a 12-volt to 5-volt power converter. Just takes some basic soldering skill to reroute the power (red) from your Android device to an alternate 5-volt power source and tap into the ground (black) while still allowing the two USB signal conductors (green & white) to pass unaffected from the Android device to the Douk converter. Doing so can only help preserve battery life and capacity to your Android device battery.

This setup sends a clean, unaltered digital signal to the Minidsp. There is a significant improvement in clarity and dynamics vs. the line level inputs and an easily noticable improvement over the bluetooth connection I''m using with the toslink input of the Minidsp. It also allows you to test the spdif digital input of the minidsp using REW and a Windows laptop.

Very impressed with the new options this device has provided in my setup. 192kHz FLAC files are supported for the best available CD-quality output from just about any regular ole Android. Construction is great, metal housing, Tiffany-style RCA connector for the spdif output, compact size.

I did not need any drivers for use with Android OTG, though the driver instructions are a bit confusing. Drivers come on a "sketchy-looking" CD-R that looks as if it was borrowed from your uncle''s cousin who also has every season of every show ever recorded from 1971-2008. He only stopped recording because he believes the government is watching him and are as focused on ending his reign as copywrite violator for old MASH episodes as they are fighting global terrorism. But we love him anyway, he''s family after all, and nobody makes apple pie moonshine as good as he.
3 people found this helpful
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Joel
2.0 out of 5 starsVerified Purchase
Drivers impossible to find and doesn''t support DSD
Reviewed in the United States on September 14, 2020
The drivers for this product are seriously sketchy. The manufacturer included a mini CD-R that probably contained the driver and a small sheet of paper with a QR code printed so poorly that I had to fix it with a pen to make it scannable. It linked to a Google Drive page... See more
The drivers for this product are seriously sketchy. The manufacturer included a mini CD-R that probably contained the driver and a small sheet of paper with a QR code printed so poorly that I had to fix it with a pen to make it scannable. It linked to a Google Drive page with a .exe file and .apk file and no documentation to confirm I wasn''t downloading a virus. No sign of the drivers on the manufacturer website.

The converter box won''t run DSD files without drivers, and my audio player (Audirvana) stated that this doesn''t support DSD natively. So I returned it. I''m not going to put my computer at risk over obscure and questionable drivers. Giving it to stars because it partially works without the drivers.
3 people found this helpful
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Mr. Underhill
5.0 out of 5 starsVerified Purchase
Excellent for Nvidia Shield
Reviewed in the United States on May 21, 2020
This is an excellent product that fits my needs exactly. I am now able to route Nvidia Shield usb audio to my Benchmark DAC3''s digital coax input. A marked improvement over hdmi -> tv -> optical out -> DAC. Audio is no longer "cooked twice" -- less clipping. Works in... See more
This is an excellent product that fits my needs exactly. I am now able to route Nvidia Shield usb audio to my Benchmark DAC3''s digital coax input. A marked improvement over hdmi -> tv -> optical out -> DAC. Audio is no longer "cooked twice" -- less clipping. Works in android without additional drivers. Product arrived quickly despite COVID-19 slowdowns.
6 people found this helpful
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HIFI enthusiast
4.0 out of 5 starsVerified Purchase
a niche product
Reviewed in the United States on June 7, 2021
This review is for Mini U2, not the Mini U2 Pro. My Neumann KH 750 subwoofer has built-in DAC but only takes BNC input. So I need to find a adapter that can replay digital output from my Win10 laptop''s USB port to the subwoofer. This seems a perfect... See more
This review is for Mini U2, not the Mini U2 Pro.

My Neumann KH 750 subwoofer has built-in DAC but only takes BNC input. So I need to find a adapter that can replay digital output from my Win10 laptop''s USB port to the subwoofer. This seems a perfect solution.

The Windows 10 native drive works fine as well as the driver provided by the vendor. The tiny CD is useless -- nobody has access to a CD-ROM in now days! In the included printed manual, there is a URL that you can download the driver, just be careful typing the long URL and make sure there is no typo -- it took me many tries to get it right.

Noticed static/pop noise intermittently, switched a few USB cables and RCA cable but the problem persists. I tried to download the driver required by the manual instruction, but couldn''t get to the URL. There is no direct contact to the vendor tech support. Tried from Amazon support and told me to wait for two days to get response. For a simple question of where to download their own driver?

----
UPDATE:

It turns out the static noise is most likely comes from Windows 10. Google Win 10 sound problems and fix. It helped in my case.

The product is fine. But the product support is a bit lacking.
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Top reviews from other countries

Jonathan Brillinger
5.0 out of 5 starsVerified Purchase
Perfect, exactly what I was looking for.
Reviewed in Canada on March 7, 2021
Used this to connect a laptop (via USB) to externally powered Edifier speakers via Optical/Coax as the onboard laptop audio was subpar. Driver install with Windows 10 was straightforward, this unit also allows full windows audio control via Windows. The sound quality is...See more
Used this to connect a laptop (via USB) to externally powered Edifier speakers via Optical/Coax as the onboard laptop audio was subpar. Driver install with Windows 10 was straightforward, this unit also allows full windows audio control via Windows. The sound quality is excellent. I had ordered a cheaper unit from a different brand and had issues with the drivers/windows audio control, ie: I could not control volume levels within windows. So you definitely get what you pay for.
2 people found this helpful
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Toronto User
5.0 out of 5 starsVerified Purchase
Finally, great sound out of the Windows computer
Reviewed in Canada on September 11, 2021
I have my computer linked to Marantz receiver via digital output for many years. However never before I was able to get good sound out of it. If you did not know Windows Sound Mixer is making the sound bad no matter what you do. In attempts to improve the sound I changed...See more
I have my computer linked to Marantz receiver via digital output for many years. However never before I was able to get good sound out of it. If you did not know Windows Sound Mixer is making the sound bad no matter what you do. In attempts to improve the sound I changed speakers, got USB high end sound card, etc. Recently I came across the concept of DSD audio where the data from file is streaming directly to the digital output bypassing any of Windows "improvements" and resampling. The Douk Audio USB Converter XMOS XU208 is a great device and now I have true CD sound (I compared with Dennon CD component ). It came nicely packaged with CD of drivers. Yes, you would need to have a way to hook up the CD/DVD drive to your computer to install the drivers. The only drawback is that all of the instructions of setting up the foobar2000 player are in Chinese. I spent several days to set everything up. The deceiving issue is if you do not install the drivers from the CD the device would still work as regular sound card but the sound would be affected by Windows. So after I used Google to translate the provided document finally I was able to install everything including ASIO and defining everything in foobar2000 player. Once done I''ve got great sound out of the device, trust me, it is really great. The drawback of the ASIO is that you loose any other sounds of the windows through this device. But it does not prevent you from still having your "normal" sounds from the laptop speaker and great music from the XMOS over digital link. I have 2 inputs into my receiver and switching between them if I want to listen to the music or participate in Zoom call for example. Also I found that there are several FLAC radio streams and foobar2000 is able to play them without problems. Even Youtube music sounds way better. Still not perfect as all other sounds blocked I really like this device and regret that I did not get it earlier before I replaced my speakers. Now even the old speakers sound great and not muffed as before.
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hanbow888
5.0 out of 5 starsVerified Purchase
Very Good USB Converter
Reviewed in Canada on June 29, 2021
It’s a very good USB IN to optical / coaxial out converter. The soundstage is very wide. Bass also is more energetic. I recommend this product. For a stable data transmission I suggest you upgrade the USB cable they provided. I used the Audioquest cinnamon cable and it...See more
It’s a very good USB IN to optical / coaxial out converter. The soundstage is very wide. Bass also is more energetic. I recommend this product. For a stable data transmission I suggest you upgrade the USB cable they provided. I used the Audioquest cinnamon cable and it eliminated the noise transmission. With the provided USB cable sometimes i could hear jaggy popping sounds. The Audioquest cinnamon eliminated completely this issue.
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RichardF
3.0 out of 5 starsVerified Purchase
Did not work for my application.
Reviewed in Canada on July 24, 2021
I can''t rate this product as it did not work for my application. Perhaps I did not spend enough time with it or download the necessary drivers. Y understanding is that it was plug and play with an android phone. That was not the case.
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2021 discount Douk sale Audio USB new arrival Converter XMOS XU208 Digital Interface TOSLINK Coaxial DOP SPDIF Adapter DSD64 PCM192Khz online

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