not compatible with a pc... the device burnt in a few days.. won't turn on... very bad... probably won't buy ever from that company.

Brought it because I was hearing slight static noise from FiiO F3. This fixed the issue.

I just got it, and connect it to the phone, gave me a huge noise in the left earbud. That leaved me with my leaf ear in pain, and not hearing well for a few minutes. After unpluggin and plugin it in again, the problem got solved. Fine, use it again to compare it with my other dac, and when pluggin it in again, gave me the same issue. My ear hurts and make me hate the product within 5 minutes. I cannot recommend this thing. Could have damage my iems as well as my ears.I wish I could get a compensation due to the damages...

What am unbelievably FANTASTIC sounding DAC dongle!! I have tried probably 10 plus DAC's from Amazon here, all CLAIMING to sound "phenomenal"...but this is the ONLY one I have tried, of the MANY, that ACTUALLY does sound PHENOMENAL!!! If you try this inexpressive DAC you will NOT be disappointed!!!!!

buen producto

Firstly, objectively speaking this thing is awesome value. Despite needing to buy balanced headphone cables before using it, for the price this thing makes for a pretty awesome mobile DAC/AMP - and despite my major grievances with it, I'd definitely use it over the stock 3.5mm headphone jack in my phone. However, this tiny little DAC seems to be built with one specific audiophile group in mind-treble - heads.Now, I must give credit where credit is due - this DAC/AMP does indeed give great detail retrieval and treble response. Sadly however, the treble becomes so bright that lows and even mids are made to sound weaker. This overall emphasis on treble lead to all of my music sounding cold, harsh, and extremely sibilant - no matter what genre or artist I was listening to. My ears would quickly fatigue and need a break from listening to my music, which I must say was a first for me. And before you blame the headphones I was using, it was not the set of cans that I had chosen - the 99 Noirs that I was using to listen to the DAC are known for being very bass - heavy, with a warm sound. So it was definitely the DAC.Now, if you ARE a treble-head, I can't recommend these enough. You'll swoon over the insane amount of emphasis put on the highs. But for everyone else, I would recommend something else. It's hard for me to recommend a DAC that, despite its value, made all of my music sound icey and harsh. Great portable DAC/AMP combo for treble-heads - everyone else, look elsewhere.

Perfect small dongle dac for on the go applications. Sounds great and provides for more than enough volume for my IEMs.

I’ve just received this half-an-hour ago, and I’ve had a smile on my face ever since!It works perfectly with my iPhone and iPad Pro, and it just sounds absolutely sublime. Via Roon on my iPad, I can plug my Beyerdynamic T5’s (with 4.4mm Pentaconn balanced cable) into the KA2, and it just sounds so good. Yes, my M17 sounds better, but this little marvel is truly affordable.If you have an iOS device, are serious about music reproduction AND you have a balanced 4.4mm pair of headphones, this bit of kit is a no-brainier!

Petit dac efficace au son naturel et dynamique. Très bon.

It's hard for me to give a completely fair opinion of the KA2 since it seems I am not a fan of cirrus based dacs. I wasn't that impressed with the Shio but I would definitely recommend that over the KA2. It seems to be a cleaner more balanced option. They have a very similar power output except the KA2 seems to have more power under 32ohms. To be fair I really don't know how factual that is. It certainly has more headroom but if you use the Fiio control app you will see the volume in it is at 120. When I change that to 100 the power output becomes nearly identical to the Shio and it sounds cleaner. After a couple days I set it to 100 permanently and it's much harder to notice a difference between it and the shio.The sound is actually acceptable but it has rough spots that the Shio doesn't. The Shio has a warm tint to it and seems to go for a smooth characteristic. It's a touch less than the warmth the 7hz ak4377 based dongle has. The KA2 seems like it is trying to mix warm and bright with more bass presence but also more upper mid and treble presence. I noticed sibilance is more noticeable and common with the KA2 than it is with the Shio and most if not all of my other dongle dacs. It's not terrible or extreme but there's definitely something there that can make some tracks fatiguing.My biggest problem with the KA2 is the need for the app. If you are fine with how it sounds out of the box then thats great. You don't need the app at all. It's in high gain by default and the volume adjusts well enough to have control over even easy to drive iems. If you notice the "grain" and edginess like I seem to then you need the app. High gain adds noise to some of my iems and the grain/edginess got fatiguing for me. Like previously stated, lowering the Fiio max volume from 120 to 100 solved alot of the issues I was having.The KA2 is actually a good dongle dac. If you make the adjustments I mentioned and also select the filter option that fits you best you will have a good experience. It's very small and portable. I would much rather carry something this size around than something that's as big as the Shio. It does get warm though. I don't know if it will fry itself like the Sonata HD V loves to do but it gets noticeably warm. The Shio never heats up so this getting as warm as it does was a surprise. I fallen asleep with it playing and it was fine in the morning and working perfectly unlike my beloved HD V so that's a good sign.This is where I get very nit picky but the sound quality and priceis stops me from giving this more than 3 stars. The KA2 just doesn't have that "balanced" sound you expect to hear when switching from single ended to balanced. There's and extra width and separation I tend to notice when I switch to balanced that I don't get with the KA2. The KA2 sounds like the single ended side of the Shio except with more power. It's certainly not bad and at the $40 I paid I'm more or less satisfied with it. At $60 I struggle to recommend it though.Even though the Sonata HD V likes to kill itself if left on overnight it sounds much better to me. Despite that the Shio would be recommendation if the KA2 is at $60. The Shio actually has that "balanced" characteristic the KA2 lacks and flat out sounds cleaner when you really focus on it. There's zero heat with it to be concerned about and the physical buttons are great to have. The ability to switch gain with a single press of the buttons is extremely handy. Same with just adjusting the volume.Basically my recommendation is the Shio when the KA2 is at full price. Get the KA2 if it goes on sale at $40 or less and you have a hard cap for what you are willing to spend. Knowing what I know now, I would always choose the Shio over the KA2 though. For me the physical buttons and slightly better quality audio is enough to make up for the price difference when the KA2 is on sale. If you decide to get the Shio I would recommend that you update the firmware so you have proper hardware volume control.

I bought the fiio fh3 and used a cheap usb c dac with it and a 3.5 mm cable and it sounded good but I kept reading that balanced cables and a decent dac would make it sound even better so I took a chance and bought this dac and a balanced cable.Amazing difference in sound quality on an S23 Ultra at least, be warned you need to turn the phones volume down if you're using this on a phone for the first time as it is very loud.Also, if using a phone with this, download the fiio connect app as you can use it to change the low pass filter, change the amount of gain, adjust the overall volume limit as well as change the left and right speaker balance.I really didn't expect to notice a difference between the fh3 iem's with the standard dac I had and this dac, yet the quality improvement is very noticeable and well worth the money for the dac and the balanced cable I purchased at the same time.Please remember this needs a 4.5 mm end on your headphones, in my case iem's, NOT 3.5 mm. If you use a 3.5 mm jack or a 3.5 mm to 4.5 mm adapter plug you will have problems, and possibly damage your dac.It's a very good quality upgrade for any mobile phone user who wants great audio, just make sure you have good audio cables to plug into it. Of course this will also work with laptops etc, I use it with a phone mainly so that's how I'm reviewing it, as an external usb c dac for a phone.The dac itself is tiny, and has a nice light ring on it, and is plug and play, and genuine, at least from the seller I purchased from.How can you tell its genuine? You have a sticker on the back of the packaging box. Scratch that off then go check the revealed number at the fiio website and it will tell you if your fiio product is genuine or counterfeit.Now I have a fiio dac and iem's I can understand better the popularity of the brand, the sound is great as is the build quality. Overall, a good purchase.

This is an excellent little value dac dongle. It does the job and does it for a good price. It’s perfect if you have a 4.4mm balanced cable OR a 2.5mm cable using a 4.4mm adapter. You absolutely CANNOT adapt a 3.5mm unbalanced cable to 4.4mm. You will fry the amplifier.Another reviewer mentions the following:- “ after 2 minutes of use, the amp kept cutting out out like a bad Norman Collier sketch and got extremely hot to the touch.”- had to buy a 3.5mm - 4.4mm adapter on top of that- “waste of money”Well, the reviewer stated in their review why the amp kept cutting out and got hot to the touch. They were trying to convert an unbalanced cable to balanced which is not possible. It will ruin your amp… you can however convert balanced to balanced, and balanced to unbalanced.Do your research. If you have a 3.5mm cable, then buy the KA1 not the KA2.

Non si può pretendere molto da un dispositivo così economico ma non è possibile sentire così tanti disturbi quando la sorgente audio ha un volume basso (ad esempio una canzone che sta finendo). Meglio spendere di più.