i.VALUX Hybrid Dynamic Balanced Armature (BA) Dual-Driver In Ear Monitors IEMS HI-FI Headphones Earphones Earbuds Headset, Blue Hybrid 2-way driver In-Ear Monitor, the 8mm dynamic driver for the bass/lows, the balanced armature for the mids and highs Good imaging and extensions on both ends, ultra-low distortion, using extreme balance tuning technology, delivers ideal listening effect in each frequency theoretically, you may hear things you didn't notice before in the song, such as a quick accidentally guitar strum, an instrument separated in audio detail and so on Noise isolation earbuds, in 3 sizes, provide a precise fit and reduce outside noise LC-OFC wire makes sound more transparent, delicate, close to nature, soft and sweetness, transparent TPE provides the good corrosion resistance, high temperature resistance and tensile strength Low impedance, can be easily driven by portable gears