This is a brief update of my Yincrow X6 review back in post 26,910. It's not unusual for it to take me anywhere between 1-4 weeks to really grok a new headphone. I have to wait until all the subconscious impressions my brain's been collecting take on enough form to bubble up to my conscious mind in the form of an epiphany. Sometimes I'll realize "wow, this sounds so good," other times I'll see through the hype and trickery and I'll hang them up in disgust.
Do note that I'm going to criticize it on an absolute scale, because doing it any other way would be boring and unhelpful. For the price ($13 US), everything about the X6 is fantastic, it hits way above that price point. Instead, I'm comparing it to anything I own, with the Sennheiser MX985 as the standard. Please keep this context in mind as you read.
The Yincrow X6, Sennheiser MX985, and my Objective2
As I suspected, the X6 doesn't quite stand up to my initial impressions in some ways, but it does in others. The biggest weakness of the X6 is that it seems to have a hard upper limit on clarity. It sounds veiled with smoothed over detail, but it does it in an inoffensive way. It doesn't
seem veiled while I'm listening to it, and details seem "smooth" instead of "smoothed over." Switching to the MX985 (or the Ting, for that matter) makes the X6's limitations starkly obvious.
The X6 isn't without its strengths. Macrodynamics are a clear strength. Bass extension/impact/slam are near TOTL level, though it isn't anything like as tight as I'd prefer. But like the detail thing above, it's bloomy in rather fetching way. I'd note that it's more warm than strictly neutral. The soundstage is indeed as impressive as my first impressions suggest: both wide and tall, very much out-of-head.
Would I still call the X6 mid-fi? I think this is an important question, but my answer might be less than satisfying because I don't know. I think it depends on a lot of factors: your music preference, your source, what particular aspects of the presentation you value. I hear it as mid-fi, but I can see how others might hear it as strictly entry-level. Fortunately, it's happens to be priced as entry-level
Another thing to consider is the X6's weaknesses are the kinds that a low impedance amp can help mitigate to a degree. I think the Objective2 does amazing things with dynamic drivers, and it (or other amps like it) will tighten up the bass bloom and sharpen the detail rendition. Even so the X6 is going to be below average at those things, the O2 won't make it sound like a whole new earbud. But it will make an obvious improvement in those areas.
Most of the time, when my "moment of clarity" turns out to be the negative kind, I'll hang up that gear in disgust and it'll be ruined for me forever. That didn't happen with the X6. It's not a very good choice for focused, critical listening, but for any activity where you're doing something else instead of consciously listening, the X6 is outstanding. It will beat the MX985 hands-down for those particular use cases. Due to its fun, bassy sound sig as well as its price point, the X6 is ideal for wearing under my ski helmet. Something brighter or more detailed is likely to be more distracting or fatiguing, and it's too risky to bring anything more expensive to that environment. But the X6 is perfect: it conveys the emotion and energy of the music in a way that's fun and easy to listen to. Despite it's limitations, it's one of the best audio purchases I've ever made