M15C Portable Headphone Amplifier USB-C Adapter | 3.5mm and 4.4mm Outputs DAC,PCM 384kHz/32bit | DSD256,High Resolution Lossless Audio Adapter for Android/iOS System/PC

If you are a fan of Questyle products, then you will love this product. If the m18i and the M15i are the big brother ess based dacs, then this M15C is the little brother that packs a punch. If you just want something very easy yet engaging to listen to, if you are not necessarily an audio file but you want to give your headphones the best shot at presenting music to your ears then get this dongle. The sound coming out of this thing was so smooth and Rich. In many ways it very much reminds me of a cheaper version of the IFI audio go bar. (without the xbass or xspace.) When I tried to compare it to some of the other dongles in my possession to be honest I found myself just listening to music losing Myself in how great it sounded. Is it as analytical as some of the other ones no it's not but it's more engaging and Musical than some of the other dongles.. Ka13, 15 and 17. Ru7, go blue, go bar just to name a few. I found myself getting lost in the music way more than I do some of the other products that I've owned. To me this was very important because for once as opposed to listening to my new details to figure out what separates this from that, I lost myself to just listening to the music. When a product does that to you you know you got a winner. So if you just want something that plays music well that will make your head Bob to the beat of the song or where you can hear the weight of the vocals in an acoustic track then please give this dongle a try. Side note I realize that headphone pairing with some of these dongles people don't always talk about but I'm going to talk about it real quick. If you are an owner of Meze audio products to be truthful this dongle well none of the ones that I mentioned to be honest pair well with their headphones. I have tried them with the 99 Neo and classic and I found that they did not sound great with any of the dongles that I have in my home including the IFI audio Gryphon. Any other headphone I think pairs great . From hifiman to Audeze. I tried the M15 with the he 4xx, he6se v2, Ananda Nano, audeze lcd-gx, and many more including iems, and they all sounded wonderful. So at that price I encourage you guys to give it a try. You won't be disappointed.

Having a love for multiple genres of music almost my entire life, I kind of stumbled upon the vast world of In Ear Monitors and their components. Owning three generations of Apple AirPods and recently understanding both the limitations of Bluetooth music fidelity as well as the potential harmful effects of WiFi lead me to the benefits of wired IEMs. Knowing that streaming from my iPhone 17 Pro Max would be essential to my setup, I also understood that a phone is a just phone. A simple Apple dongle can convert the signal but that alone doesn't have adequate power to push fidelity to the next level. This is where the Questyle DAC Amplifier is indispensable. I was immediately blown away by the fullness of sound that this devise provides. Staging and clarity are dramatically exemplified even on 'standard' gain (my preference is generally 'high' gain). Highs, mids and bass levels are spot-on without being too saturated or over-exemplified. Small, compact, portable, and high build-quality are the hallmarks here. Needly to say, I'm very satisfied with the M15C. (My setup: Fosi Audio IM4, okcsc dongle, Tripowin Zoe cable)

I bought this DAC/AMP to pair with my Xenns Mangird Tea Pros on Cyber Monday. After almost 2 months of using my IEMs with this DAC/AMP, I can provide some of my thoughts and experiences: - The audio quality when it comes to just music is superb, there is nothing that I can notice that is wrong. - Most of the issues I came across arose when I used them with my portable Apple products such as my iPhone 16 Pro and iPad Pro -- I have no experience with issues on MacBooks and Android devices as I do not own any of them. - I have also used this DAC/AMP on my Windows PC and have not had any of the issues that I had with my iPhone and iPad. - Being on voice call with other people while listening to music through this DAC/AMP at the same time was impossible for me on my iPhone and iPad -- the voice call would take priority and the music just turned into crackling noises. - There have been countless incidents where the DAC/AMP completely disconnects audio from my iPhone and/or iPad, causing me to have to unplug and replug it into my device -- I don't know why this happens, but I suspect it to either be something wrong with Apple's new Type-C port, or that the wire that comes with the DAC/AMP has some underlying problems; all-in-all, it's an annoying and frustrating issue, but I can personally live with it for the time being. - I saw another review on this DAC/AMP talking about how there is popping when it comes to this DAC/AMP; I can personally vouch for that, but the thing is I have only come across this issue while using this DAC/AMP to watch YouTube -- a small but noticeable popping noise every time a YouTube video was paused, and it happened every few seconds. I've had my fair share of issues with this DAC/AMP, but ultimately I think it's an okay DAC/AMP for the price.

I'll save the technical details for those who can best explain them. For me, all I can say is this little Gem has introduced a whole new world of exploring and re-learning all the music (both vinyl and CD) that I have collected and cherished my whole life. Seriously. I messed around with Win Media Player after discovering I can digitize everything using Audacity (free software) I then got a decent pair of headphones I bought used (AKG K553) took a shot with the Questyle M15C. Downloaded Auris for the laptop and Poweramp for the phone, then learned to tune the parametric EQs for the K553, scored a Grado SR125, the little KPH40 in the picture, and the rest has been musical Nirvana. The M15 drives everything clean, clear and as loud as my heart desires. The Headroom is HUGE due to the fact the M15 is current driven rather than voltage so there's no breakup at volume. I consider the Questyle M15C one of the best, smartest purchases I, as a lover of vintage Rock & Roll have ever made. Don't think, don't hesitate, Buy one while you still can.

My first unit was defective…but Update: Questyle replaced the unit and so far so good. The sound is a bit softer than ESS chip devices but still resolving..More to follow... Update: the current unit is working just fine and sounds really really good, especially for the price. I highly recommend it for a smooth, sounding highly powerful dongle.

The looks are very impressive, but not the sound quality. I found way better sounding dongle dacs like the FIIO KA15 and the Shanling Onix Alpha at a similar price. Now I really recommend to get m15i. That dac is the real deal. The sound is superb and the price is worth the quality of this great dongle. Get it and thank me later! :)

Constant disconnections, very minimal difference between low vs high gain, randomly drops audio regardless of device. Connected to iPhone, then iPad, then desktop gaming pc. Awful experience. It constantly disconnects from the source even though the red LED connection (lossless/hi-res) light is still lit. To “fix” the issue, you have to physically disconnect the DAC from whatever device it is connected to and disconnect the audio jack from that device then start over. Not worth the $100. Not even worth $40 in my experience. Just a subpar, poorly manufactured device that costs more than some or most brand name DACs on the market. Strongly not recommended.

Sounds fantastic, but the QC seems to be problematic. Less than 24 hours of ownership, if I breathe on it wrong, it disconnects. Tried another cable, but have the same trouble. Returning it as defective.

I am really quite amazed at the sound quality coming out of this little DAC headphone amplifier. I have them paired with a set of Hifiman Sandara headphones.

It is exactly what i needed. Now i listen music on another level, quality is super. If anyone wants to listen FlAC quality this device is exactly that one

Very nice, two peas in a pod with Audio Technica. Soundstage feels powered, stiff instrument presentation. My only grip is it cuts out after about 15 min. Trouble shooting i am confident it’s the 3.5 input of the dac. Relatively new low hours and beginning to fail.

Sound is excellent, But when I'm walking it keeps disconnecting from my iphone every 5-10 minutes. Very annoying!

Love it. I make no claims of being an audiophile, but produce & engineer and have developed an increasing appreciation for quality audio over the years... and am seriously impressed with this. Didn't even know these types of DACs were a thing until recently and can't believe how crappy my old setup sounds in comparison now, haha. Using mostly with Sony WH1000-MX5 on Samsung phone, sometimes Audio Technica ATH-M50X - and with the Wavelet app on Android that has the custom EQ curves for each pair to get to a Harman balanced profile - the combo of that EQ curve and this DAC is UNBELIEVABLE. Night & day. Continually blown away every time I listen. Did a deep dive on options with ChatGPT and went with this as seemed great value with the slightly warmer analog character idea like, kinda at the threshold of diminishing returns for what'd get at higher prices... quite satisfied. UNTIL... UPDATE: it DIED. hadn't used in couple months as bought a Hiby R4, was just sitting in briefcase, and when went back to use... NADA. light briefly on when plug in then nothing. so about 3-4 months use then DEAD. However, Questyle DID replace under warranty. Was waiting for a reply for a while, trying to the fiest couple email addresses I saw on website - but when went to look again and found the correct one they had listed for warranty issues, were fairly quick then and got the replacement. I havent tried any other DAC dongles in this price range so no experience to compare against, but would recommend as a solid option.