Douk Audio U2 PRO XMOS XU208 Digital Interface, USB to TOSLINK Coaxial/Optical/HDMI IIS Audio Adapter, for DAC/Preamp/Amplifier, Support PCM & DSD256

1. Got it to use my usb printer style cable to convert usb to i2s input into my dac2. As soon as i plugged it in my dac my dac read dsd stream.3. I started messing with the functions of the dac and lost the dsd recognition ?? (I should have messed with the dsd settings - niw i created new problem for myself)4. I played regular SACD disc without the pDouk DDC & i2s to compare with and 1without the DDC i2s converter.5. There is a major sound difference immediatly in my low budget system. With Douk DDC and i2s t DAC using wiim ultra -- music sounded better than my SACD disc.Sound sounds alot more better quality

Prior to purchasing this model, I was not aware that such an accessory even existed. I was having problems with noise and other factors with the USB input running from my desktop PC to my FX-Audio DAC X6 DAC unit. I had almost given up on it when I came across this Douk Audio U2 Pro advertisement on Amazon. It features a much higher conversion rate than my FX-Audio DAC. My FX Audio DAC had a top conversion rate of 24 Bit-192 kHz, whereas this Douk Audio U2 Pro USB to Digital interface has a top conversion rate of 32 Bit-384 kHz.After ordering it, I connected it by plugging it into my USB input on my PC, and then running a Digital Coax cable from the U2 Pro to my FX Audio DAC. The result - I was absolutely delighted in the sound transformation. Any noise was completely removed - absolute silence now - but more so, the sound reproduction qualities improved substantially. The improvements were substantial enough that it was discernible immediately with a warmer, less digital tonality, yet the music was very dynamic.So for folks who might be having USB issues on their PC, placing an item such as this U2 in the sound path between your PC/Lap-Top (connected via USB) and a DAC or amp (running either an optical or digital coax cable from the U2), you might be in heaven.Douk also makes a less expensive version known as just the U2. That particular model has a conversion rate of 24 Bit-192 kHz. Either way, both of the Douk models are inexpensive, yet they really punch far above their weight, considering what they do. SMSL also makes a smaller one with a 24 Bit-192 kHz conversion rate.Again, I was not prepared for the wonderful audio qualities I began experiencing once I inserted this device in my path between a PC and my DAC. There are so many different ways that you could connect this device - although you must remember that the device must plug into a USB input on whatever you are using as a source, and then you have a choice of running either an optical cord or a digital coax cord to whatever input device you select (DAC, Preamp, Receiver, Amp, etc.). I'm surprised that not more companies make devices such as this (at a reasonable price, that is).I don't know what else I can add here. These wonderful devices (2 of them made by Douk) may (can) solve many an issue involving with USB inputs on various devices. And for the small amount of money you expend, the results far overshadow the small amount of cash you may have expended.As is always the case, personal reviews are subjective. Your mileage may obviously vary. For me, this U2 Pro (and I also purchased the lesser expensive U2) made a huge improvement.

This is a very narrow use case review. I was looking for a way to connect my iPad to toslink input in my integrated amp (rotel ra-12) and be able to stream hi res audio from Amazon Music app, Qobuz, etc. at high sampling rates like 96kHz and 192kHz.This U2 PRO won't get any sound at all from Amazon Music app no matter the sample rate. The DAC clicks but there is no audio. Qobuz will work up to 96kHz. Anything beyond that wouldn't. I also tested TIDAL hifi cd quality and it worked fine. I didn't test the Masters things nor the MQA.I tested with another DAC from schiit audio (Bifrost) that also supports 192kHz and it showed the same problem with Amazon Music and Qobuz.Later I got Reiyin DA-02 which showed the exact same issue as the U2 PRO. Maybe they share some hardware, who knows!My use case end up working fine with cubilux USB A to TOSLINK adapter. I can't believe it considering how small it is. My brother was saying it would be impossible it would work but hey, it does everything perfect even 192kHz hi res from Amazon Music.I got in contact with Dunk Audio people by email but they didn't seem to take my info very seriously. They came up with an easy answer "your dac doesn't support 192kHz" like if I didn't know what I was doing or if I didn't tested with another DAC. Anyway I don't blame them for any of this issues as I acknowledge my use case might be too narrow and specific and I don't see anywhere in their description that iPad USB out is supported.

I have a respectable, audiophile grade stereo system based in large part on the mighty LAIV Harmony DAC. I became aware of digital reclockers via various YouTube videos. To be frank, I wasn't expecting much of reclockers in general and the Douk in particular given its price. I was wrong. The Douk made an instantly noticeable improvement to sound quality in several ways once I connected it between my audio PC and the Harmony. I used USB from my PC to the Douk, and IS2 from the Douk to the Harmony DAC. The most notable improvement was in increased transparency and detail (the Harmony is no slouch in these areas on its own). I also heard deeper, fuller, tighter bass combined with a fuller, more detailed treble. I highly recommend this reclocker or the similar SMSL PO-100 device for high performance audio systems using digital sources if you're on a budget.

This product sounds great, but unfortunately customer service from Douk is poor and no one answered my request regarding the inability to directly download xmos drivers from their site. I don't have a CD reader on my computer so the disk which came with the product could not easily be used. I was able to use asio4all but did not have the xmos drivers. After waiting a week for nobsound to reply, which they never did, and the site not working for downloading drivers,404 designation, I had to borrow a CD reader fom a relative to copy the drivers on the CD to a USB external drive. Only one worked, but at least I got an xmos driver. Product is good but getting it working properly should not be this hard. I would have given it 5 stars if the driver download site had worked and if customer service had responded to my email. No excuse for not responding to customers.