warning - i'm just an amateur audio enthusiast. Take my opinions with a grain of salt.
Here's an unboxing & mini-review of the BLON cardinal -
Bought the cardinal on taobao for 474 RMB, which is roughly $68 USD. Purchased on 11/7, arrived on 11/10. So short delivery time for me, though I live in Beijing, so it's to be expected. It does appear that there's not so many in stock however. Blue jay seems to be sold out everywhere. Anyway, on to the mini-review.
the packaging -
BLON - natural is natural
BLON - presenting hifi to burn music
Clearly way better packaging than the BL-03. Nice set of tips, a 6.5mm to 3.5mm jack, and a little pelican case with the cable inside.
Close-up of the actual IEMs -
BLON Audition - says nothing about cardinal on it. Wonder if this is a newer revision???
somewhat better view of the driver. It's quite large but there's still a fair amount of empty space inside.
no mesh in the nozzle like the BL-03.
fitted with the stock cable & stock large silicon tips. BL-03 beside it with AZLA sedna silicon tips & stock cable for reference (my personal fav tips to pair with the BL-03)
Once I fit the tips I was eager to try it on. I could tell it would fit better than the BL-03, but I wasn't prepared just for HOW WELL it was going to fit. Even with the stock silicones, I instantly got a perfect seal and comfortable fit, with 0 finagling.
So now it's time to listen. I first listened to the BL-03 again to establish a baseline. My source is a LG V30. I have a reference track that shines very well with the BL-03s, and that's a track by "Hot Chip" called "Love is the Answer" from the album "Why Make Sense?" in 24-bit flac. People say electronic music is not a good match for the BL-03s and I generally agree. However, indy-ish music sounds fantastic, as it's very vocal-driven, mixes in instruments such as bass/piano/etc, and doesn't have "too much going on". Also Hot Chip albums are particularly well-mastered. Anyway, it of course blows me away with the BL-03. What stands out to me is the very prominent lower mid-bass, natural timbre, and forward, natural sounding vocals that are produced as well as any IEM I own, including my 8-BA T800s. Then I switched the to the cardinals. I could immediately notice a difference. It wasn't dramatic, but it was there. The soundstage was more open and airy, but the vocals recessed a bit. Still had a nice textured lower mid-bass, but not as much impact as the BL-03, and the recessed vocals it didn't quite wow me as much as the BL-03. Still, it sounded very good, and I had a hard time telling it apart from the BL-03. The tuning sounded very similar, just the presentation was slightly different.
So wanting to do a more apples-to-apples comparison, I swapped the stock silicon tips with the AZLA sednas.
After listening again with "higher quality" eartips, the magic was back. The lower mid-range was just as impactful as the BL-03, the timbre of the instruments, the vocals all sounded wonderful as the BL-03. With one slight difference - the sound-stage is wider and more airy. What a nice surprise. I would describe the BL-03 as more intimate, especially with vocals. Whereas I'd describe the cardinal's as more open and airy, but just as impactful. Again, the tuning is similar. I would bet money it's the exact same driver, tuned exactly the same. I would assume the only difference in sound is due to the shape of the body.
So to sum things up, if you were hoping to for a BL-03 in a more ergonomic body with better isolation, and better stock packaging, the cardinal absolutely delivers. It does double the price, but so what? To me the fit alone justifies the cost, as the biggest con to the BL-03 by far is the wonky fit issues. If I can fault it in any way, it's that the stock tips don't truly bring out the best in it (but how often is that the case anyway), and the sound-stage is less intimate in exchange for being more open and airy, which may or may not be to everyone's tastes. But again the differences are slight. You feel like you're still listening to the BLON BL-03, just slightly re-imagined. Sooo do I recommend these? HELL YES. I will rock these now in place of the BL-03. The fit is fantastic, the stock cable is great, and it's still got that hyped up BL-03 tuning, which presents sound in just a slightly different manner.
Seeing as these are quite rare and hard to acquire, I'd grab one now before they blow up and get even harder to find!!