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.

Inexpensive, easy to install upgrade that absolutely improves music experienceWiim Ultra USB out to SMSL PO100 PRO then optical into Geshelli J2SDelivered in 10 days

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.

This SMSL digital to DIGITAL converter is a solid 10 in cost effective upgrade to a sonic system.I gave it a 4 because the instructions don't translate to English such that I understand what's going on. For example, I still don't know what those 2 rocker switches on the back actually do?However, don't get it twisted...once I got it decently integrated, it's off the chain good in imaging, soundstage, clarity, transients and with a dark background.Was a hassle to order with long lead time, but it was worth waiting for.

The title of the product is not correct. There is no digital to analog conversion. You need the "AK" version if you need it. The "Pro" version is just a digital to digital conversion. So why do you need a DDC? For several reasons:1) You want to output digital from a USB port but your DAC doesn't have usb input, but has one of the following - coax, optical, or i2s.2) Your USB digital out to your USB digital input of your DAC has ground loop or other audible noise. This will eliminate the noise - for sure with optical, but coax should do the trick as well.3) Your want to output digital from a USB port but your DAC sounds best with coax or digital based on reviews or DAC maker's recommendation.4) You want to output your single USB digital to multiple devices - all of the digital outputs work simultaneously so you can connect each one to a different device.

Absolutely FANTASTIC! Huge difference in the sound quality.

I bought this to connect my Wiim Ultra to the USB input of my DAC. I did the purchase on the advice of the Cheap Audio Man.Does it sound better than using a straight SPDIF output? I am not sure...it sounds the same to me.It works ok to convert a USB output to coax or toslink. In this regard, it works well and could be useful. As a "reclocker": this is what I bought it for, and I don't hear any difference.