IEMusic
Headphoneus Supremus
It may just be me, but I think companies should stick to simple designs, such as a single DD, when designing budget IEMs that are less than $100. They should focus on exceptional tuning, and quality of driver. These IEMs with hybrid, multi driver arrays are very complex, with so many variables, such as type and quality of drivers, coherence, complex crossover design, timbre, etc. I haven‘t found one yet that I prefer to a well tuned single dynamic driver IEM. (e.g. BL03 vs KZ ZS10 Pro). It‘s very difficult to get all of those variables right on such a tight budget. All hybrid IEMs that I like a lot are >$100. This is not to say that the budget hybrids are inherently bad at all, just often not as good as the well-tuned simpler designs.