This is merely my initial impression based on spending an afternoon listening to them.
I'll go as far as saying the Bette 1+1 hybrid is pretty decent, but not a giant killer to my ears.
They are eerily similar to the AX-35 in both build and sound. I wouldn't be surprised if they used the same drivers. The sound is almost identical to my ears with the Bette having a little more bass forwardness and thump. I'm guessing the housing is a little more vented on the AX-35. The armature drivers sound identical to my ears.
They have nearly identical cables that are the same colors and materials. The plug and strain relief are basically the same design with a slightly different finish. The housings look quite a bit different but they are the same size and weight.
The housings are identical to the KZ ED-1. I'm pretty confident to say that the Bette is an OEM that uses spare parts in a very good and creative way. For someone looking for their first pair of hybrids and they're thinking about going for the AX-35, I would implore them to save their cash, buy these, and use the rest of their money to purchase a few KZ IEMs like the ED9, ED10, and ATE.
While I agree with a lot of what
@jekostas said in his review, I would disagree on the level of clarity. I will fault it for the same reasons I did the AX-35 in that there's a lack of resolution overall, especially in the upper midrange that puts it behind most other hybrid earphones. Overall, it sounds a bit congested to my ears. Sounds for the most part seem to blend into each other to a certain extent. The tuning is there in terms of balance and there is a fair amount of texture, but separation and clarity suffers, especially in the upper frequencies. There is some graininess from where the letter S is pronounced and continues up into the upper treble frequencies.
I don't find this as a bust, because for $35 bucks you get a lot of technology, decent build quality and sound for a mere $35 USD. It's basically a AX-35 for almost half price.
Truth be told, technology and tuning is progressing at a very fast pace for in-ear monitors. If these came out at the same time as the AX-35 they would be taking the IEM world by storm. The fact that they are being discovered the same time you can get earphones like the KZ ED9, E80, KZ ED10, ATE, A151 P 2nd Gen, Havi B3 Pro I, Piston 3.0 and many more for $50 or less, with many of the ones I named for $15 dollars or less we have to see the Bette for what it is which is a decent earphone that is worth the money but not something revolutionary.
I'd say it's a good first hybrid. I'd say it has a fun signature that is a formidable listen. I'd say it's a great deal for hybrid technology. I won't say it sounds better than any of the IEMs I mentioned in the previous paragraph.
This is my initial impression based off of an evening of listening to them and comparing them to the gears I have. YMMV
Cheers guys