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Tony N
Reviewed in the United States on February 9, 2025
My first m18i had quite a few issues that’s unnecessary to list out and all that really matters is that Questyle helped replace it. My replacement has better battery life and slightly better bass response. It also turns off when I want it to thankfully. I now physically own both the m18i as well as the also newish Fiio Btr17. Main differences between them is the battery life, sound, and some smart features. In terms of power they’re practically the same. Bluetooth performance I’d say the btr17 has a faster connection speed which is better for gaming on my iPad Pro but the sound from my iPad is pretty much the same quality which I will say is great. Battery life has to go to the btr17 as my m18i seems like it drains a bit quicker than the Fiio. Now the Fiio definitely has more of a dynamic sound especially in the low end. And me being a bass head that still enjoys clear details the btr17 takes the cake for me personally due to its stronger bass presence. The m18i offers more of a treble head type sound that audiophiles and audio enthusiasts may enjoy more ESPECIALLY if you don’t want to eq with an app unless you’re on android or computer. The m18i is an easy to use dac amp that one can simply turn on and plug and play wired or wirelessly. I’m rating 4 stars out of 5 due to the m18i not having a built in eq (to my knowledge) and lack of accessories especially at this price range. I would of liked to see some kind of protective case included like the btr17 but I saw one that can be purchased for around $39.99 I believe for the m18i that I’d definitely recommend to get. Its pretty nice looking so protection is a must.
Jay W. Ammon
Reviewed in the United States on February 3, 2025
I didn’t have the capability (codecs) to listen audio in hi-resolution, so I don’t have any sampling of those features, but in the standard 44.1 KHz / 24-bit Bluetooth audio profile I did get to try out, the sound was crisp and clear, and, (I imagined - for the price: ~$349-$399), it was as lossless and high-res as might be heard and perceived, by most - it’s purported that some folks can hear the difference in higher resolution Digital to Analog Conversion gear. I think that it’s a future-friendly format to do development and production in, as far as a product line is concerned, which this company offers. It just seems like a whole lot to pay, for relative comparison, given tech devices. Then again, though, my device doesn’t off hand support the higher-resolution audio codecs. Perhaps there are some unbeknownst cooler features than standard, with a DAC like this. I would have liked to have seen support for USB-C audio (headphones out). There’s only an 1/8” standard headphone port, and a newer, balanced 4.4mm port, for audio out, which, I suppose, is the point, after all, of a digital to analog converter, anyhow. All in all, it’s a pretty cool product, it’s just a little pricey. The device can take phone calls, hit play and stop play on music tracks the user is listening to, for example. I’d like to see where future iterations of this type of device go. Will there be smart features built in, in subsequent products? I hope so, that would be cool. For example: having the device do live microphone audio monitoring and listening, as a Bluetooth device, would be cool; having access to the microphone, in other words - in other settings, aside from phone calls, would be nice.The device, aside from all of that, is well made - the display is nice, but there’s a downside, I feel, to the current manufacture of this device - there’s no auto-shut off function. The battery can go on and become fully drained, if the user isn’t careful to shut the device off, when putting it away. This got me, the first time I took the device out to test it, and I came back to the device, later, with the battery fully drained, whereas I only used the device for a certain period of time, and I put it away, without shutting it off. Auto-shut off is a good smart feature to develop in, I’d say. I like that the device is so compact; it’s a neat device to carry around, and music and audio sound great with it.
KPH
Reviewed in the United States on January 28, 2025
It's a great headphone amp for the audiophile. Nicely packaged and includes the amp, USB - C to B converter and USB-C to C dongle. The controls are very tactile and well marked although I did have some issues with getting the play next / previous to work in Bluetooth mode with my Hiby M300 - perhaps it was just me because everything else worked well. Very nice that is has both a 3.5mm and 4.4mm output. the case looks to be a light weight metal with a black glass front - very clean looking with the look and feel of good quality. Input ports and control buttons have a gold ring around them that looks super classy and makes seeing them easy. Glass display, which is fully blacked out, is super easy to read, is very minimal yet super useful. Instructions are easy to understand and setup and usage is very easy and logical. Hi and Low gain output is easy to switch. Bluetooth mode works great. I tried this unit with several easy and difficult to drive IEMs and headphones and it drove everything like a champ and without effort. The form factor, which is small and light is a huge plus. It easily slips into a jeans pocket - it's about the same of a Fiio BTR17. The sound is excellent but tends toward the analytical side - very detailed - not overly warm but not harsh - you will head details you have not heard before in your music. Bass is wide but not particularly deep - enough to satisfy my taste. Not for bassheads. Mids are lush and present vocals very well. Highs are very detailed yet comfortable to listen to. Soundstage is good but not the widest I have experienced. I compared this unit to my Muse M13 Ultra - which has both tube and solid state settings. The solid state setting of the Questyle was nearly identical to the Muse. In tube mode the Muse presented a much form easy, comfortable, rich sound that only tubes can produce. The Questyle wins on form factor being much smaller than the Muse. Why do I mention the comparison? The Questyle is $100 more than the Muse.I would recommend the Questyle over the Muse to a discerning audiophile that does not want the material colored and values more detail. It's fun to listen to, just not as fun as the Muse in my view. Overall, I feel it is a very well made and sounding unit and I would recommend it to anyone who wants a premium sound at a premium price and requires a smaller form factor for portability.
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