SMSL PO100 PRO MQA DDC XMOS XU316 Digital to Analog Audio Converter, Type-C USB Input IIS/Optical/Coaxial Output Mini Portable USB Interface for Phone/PS5/Switch/TV

It took 12 days to arrive, so in hindsight I would've gone to a dedicated audio supplier to buy this for faster service. As for the DDC, it is not a DAC, it is a Digital to Digital converter and includes a USB clocking function which is the main appeal. It works excellent. Very small, quick and easy setup. There is a noticeable upgrade in the audio. Noticeable. Running from a Wiim Ultra into a Cambridge Audio DAC and into an integrated amp. It's hard to describe.... people tend to note that transients are bolder. It is true. Yet there's more. The audio gets noticeably more detailed, bulkier in the midrange in a very pleasant way. Track of note - Art Blakey & The Jazz Messengers track "Caravan" off album of the same name. Hi-Res @ 24/192 streaming over Ethernet. Wow. I chose this for the huge drum solo and basic structure that would highlight a device said to improve transients. Again, wow. Blakey's solo came alive. It's hard to describe but it was like the drum hits and cymbal work was jumping off the speakers and thumping me in the chest. A noticeable improvement in the overall detail. I spent a couple hours rotating test tracks and I am blown away. Such an inexpensive device, and though I'm not using it on its own, its integration into a system in between a half decent quality streamer and DAC is a must have. I have more listening to do tomorrow and I cannot wait.

I received my SMSL PO100 Pro Digital to Digital converter quickly after ordering, given that the unit was shipped from overseas. AOSHIDA, the Amazon seller, was very proactive and kept me informed on the status of my order via email messages including notifying me of the arrival of my order in the US and when my order had cleared US Customs. Total number of days from order to receipt of the SMSL PO100 Pro was just 9 days. I purchased the SMSL PO100 Pro from Amazon based on an online review and recommendation that the SMSL PO100 Pro can be used to re-clock the digital signal from the WiiM Ultra preamplifier to reduce jitter in the digital stream from the WiiM Ultra. Based on my listening experience with headphones the SMSL PO100 Pro when used as a digital signal re-clocker improved the sound I heard. The output of the WiiM Ultra is very pleasing. However, to test the effect of re-clocking the digital signal I inserted the SMSL PO100 Pro in between the WiiM Ultra (using the WiiM Ultra's USB port as an output and sent the streaming signal to the SMSL PO100 Pro's USB-C input.) The re-clocked signal was then routed via a digital optical cable to my Denon PMA-600NE (purchased from Amazon) stereo amplifier that has two optical inputs and an internal DAC (I can't recall which DAC but it sounds very good to me). The best way to describe the improvement in audio is that the transient sounds including drum sticks hitting wood blocks, generally any percussive sound was cleaner, clearer. In comparison, without the digital signal re-clocking performed by the SMSL PO100 Pro these transients as streamed from the WiiM Ultra sounded smeared (that is the best way I can describe what I was hearing.) The SMSL PO100 Pro comes with everything you need to connect the unit in between a computer or in my case the WiiM Ultra's USB output and a digital amplifier. The required 5V power is provided to the SMSL PO100 Pro via the USB-C connection.) SMSL provides a USB-A to USB-C interconnect cable (approximately 24 inches in length) and a shorter USB-C to USB-C interconnect cable. The digital amplifier must have an optical connection and its own internal Digital to Analog Converter (DAC). Alternately, you can connect the digital optical output of the SMSL PO100 PRO to a Digital Analog Converter that has an optical input (Note that the WiiM Pro Plus streaming unit (I purchased from Amazon) has both an optical input and and optical output so you could use a WiiM Pro Plus as the DAC and then use the RCA output connections on the WiiM Pro Plus to connect to a two channel stereo amplifier that may not have an optical input or an internal DAC.

THERE IS SOME WORT OF MAGIC INSIDE THIS LITTLE BOX. I THOUGHT THE WIIM ULTRA MADE A GREAT IMPROVEMENT AND THOUGHT THAT IS ALL I WAS LOOKING FOR. SAW A YOUTUBE VIDEO FROM CHEAPAUDIOMAN. THIS WAS ON SALE FOR 60 SO I SPLURGED AND TRIED IT OUT. WOW, I DON'T KNOW HOW TO EXPLAIN IT, BUT IT REFINED THE SOUND. I THOUGH IT SOUNDED GREAT BEFORE BUT NOW IT'S EVEN MORE REFINED, CLEARER, BETTER DETAIL, DEEPER BASS, A MORE FULLER MIDBASS, HIGHS BECAME LESS HARSH/FATIGUING.

This little unit is NOT a DAC, as described in the listing. Instead, it is used to adapt usb digital input to coaxial or fiber optic digital output. The big takeaway, though, is that this digital to digital converter, includes a 'reclocking' feature that cleans up the signal in a way that improves the sound quality substantially. I use it as the YouTube reviewers 'Cheapaudioman' and 'Old Guy HiFi' recommend: Use USB output from WiiM Ultra streamer through this unit into a digital input (I use optical toslink into my Geshelli Labs J3S DAC.) The sound improvement using this little unit is well worth the price. Resulting sound rivals much more expensive DACs. Highly recommended.

An Stelle einer Bluetooth Verbindung wollte ich den Laptop über Usb, dem SMSL und Koax mit dem DAC, ausprobieren. Die Auswirkungen sind auffällig. Der Reclocker mit sehr geringem Jitter übergibt die Daten an den DAC mit zwingender Präzision. Dies sorgt für mehr Klarheit, Luft und Genauigkeit in der Abbildung. Der Mittelhochton Bereich klingt erst einmal hart und analytisch. Geben Sie Ihren Komponenten mehrere Tage Zeit sich für diese schnelleren Anstiegszeiten zu öffnen. Die Tonale Balance verschiebt sich subjektiv etwas in Richtung analytisch hell. Ich verwende 2 DACs mit 2xBB1794 Wandlern je Kanal. Sie klingen mMn. natürlicher und wärmer als reine Delta Sigma Wandler. Interessant ist, dass der DAC, der aufwändige Analogfilter besitzt nun richtig aufblüht, während der andere mit schlanker Befilterung zu hart und digital klingt. Es kann also passieren, dass Sie Ihren DAC nicht mehr mögen! Ggf. passt ein R2R Wandler gut dazu.

DSD perfetto, abbinato a buon DAC esterno e collegandolo con uscita I2S "ripulisce" il segnale digitale ed il suono è molto pulito. Lo consiglio

En attendant un DAC possédant une véritable entrée USB, ce petit convertisseur m'a bien dépanné !!! Il est vraiment très bon !

The device comes neatly packaged in a box with two more USB cables included (USB C -> USB C + USB A to USB C) and a manual. There you can find the function of the switches on the bottom of the device. If you make sure that exactly the same pinout of the I2s corresponds to the DAC I2s you connect the device to, they work fine together! Important note: download the USB driver for the device from SMSL. For Windows 11 this is not automatically installed. The driver also installs an ASIO control panel. When using Audirvana for example, you now select the ASIO driver of the SMSL instead of your DAC. My USB audio now runs as follows: USB2.0 output to a Topping HS02 to galvanically isolate the USB output. From the HS02 a USB C cable goes to the SMSL PO100 pro. From there an HDMI cable (short) to my Denafrips Pontus 15th DAC. I now have a soundstage that is much more open, a wider stereo sound, depth of sound has increased. A much more vivid experience compared to the sound without the intervention of the PO100 pro. It really comes highly recommended, especially for the money!!!

Great little unit.