PROZOR192KHz Digital to Analog Audio Converter Optical to RCA Adapter Upgrade Volume Adjustable DAC with Optical Cable, SPDIF TOSLINK to Stereo L/R & 3.5mm Jack Converters

This is a beautifully made product that sounds as good as it looks. I was unsure how this would work with my picky planar speakers for audio, but it did a wonderful job. Definitely FIVE stars!

got to my house opened the package everything worked and installed the item and found everything worked great.

I am 76 years of age and need headphones to enjoy our new television. My headphones are old but this unit accepted its jack [3.5mm] and it works beautifully. I like the volume control as my hearing is declining. It will come in hand when the volume control on my headphones no longer works. The price is good, the instructions explicit, and the delivery was very prompt. I am very happy with the purchase.

this works great.

Simple, Works well, Louder, Clean Sound

I needed a way to use my headphones with my Panasonic TV, which only has a digital audio out port. I tried several different types of converters, and found most of them wouldn't work due to the Dolby or DTS format which it seemed my TV provided. However, this device worked perfectly. Quite happy!My only complaint is this device doesn't have a power switch. Others would turn off when you turn the volume totally down; they would click off. But this one there's no way, other than pulling the power. I purchased a in-line power switch to put between the power supply and the device, which solved that problem.

So I am both happy and unimpressed with this purchase. Usually I would spend more for for audio equipment but this was honestly one of two DACs with an optical audio port and line out that served my needs, the other being the FiiO D3 or D03K, and they were within a few dollars of each other with the Prozor having a volume knob I thought may be beneficial. My setup takes an optical audio signal from my Samsung TV then runs into the Prozor DAC and then from the line out (3.5mm headphone) port I run a shielded 3.5mm cable into the line in on my computer which is then mixed with my computer audio. This allows me to use my TV (along with consoles and other systems) while also being on the computer. Originally this was done using a 3.5mm cable straight from each console controller to the line in which had become a hassle and regularly had static and interference issues. The Prozor solves some issues while bringing new ones to the table. So to address some initial things. My volume knob can go from zero to max with no distortion or crackle both running through my motherboard and having headphones connected directly. I did not use the provided toslink cable but instead purchase my own which was longer and of better quality.Issues from most important to least in my usage:Issue 1: Parts of this DAC are either not shielded or not shielded properly along which the optical audio port being seemly loose compared to other ports I've connected the cable to. Touching and moving the DAC causes some static and popping especially if anything touches the toslink cable. Additionally, setting the DAC on top of my old Macbook Pro or Anker USB Charger causes audible static every 4-5 seconds. It now sits alone pushed to the back of my desk next to some books to prevent interference.Issue 2: The device has a violent crackle to it when it is initially powered on and for the first minute or so. Since I've left it running I no longer have the issue but it was noticeable. Not something I would ding it for in my personal usage but if you're someone who is powering it on and off each time you flip on your TV or something your ears might be in for a minute or two of crackling.Issue 3: The device has a low hum running through it at all times. Not exactly a sign of quality but its not a crackling noise and can be drowned out fairly easy by most ambient music/sounds in games.Overall this works about on par with how well my $45 4k HDR three port hub switcher does. For example the switch works but it has some odd issues like the box not switching when told to and the connection blinking and causing a black screen when it gets hot or hasn't been on in a while which then takes a few minutes to resolve itself. This DAC is similar in that it works but has issues and I happen to be able to work around them in my usage. If I had it to do over again I would probably go with the FiiO D3 simply because I have a $100 FiiO DAC/Amp combo from them that pushes my Beyer DT 770s and it doesnt have shielding issues. Sadly they don't sell it direct on Amazon and you have to trust one of their Authorized Dealers isn't just selling knock offs. But they're both in the $20 range so it's perfectly possible both DACs have similar failings.

Very high quality, easy to set up, and works perfectly.