Combining dynamic driver units with balanced armature for an extreme in-ear listening experience: profound vocal sound with extended bass. That is why hybrid headphones come up. Features: -Hybrid 2-way driver In-Ear Monitor, the 10mm 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 -Can work with any multimedia devices that have 3.5mm audio jack, however, for better sound, we suggest you to use high quality player, and listen to APE, FLAC, WAV, DSD or some other lossless music -Note: we suggest you to burn in before using, to make the mechanical parts reach a relatively mature and stable state. Specification: -Brand: i.VALUX -Driver Unit: 10mm Dynamic Driver + Balanced Armature Unit -Impedance: 32 OHM -Frequency Response: 5 Hz-28000 Hz -Sensitivity: 112 dB/1mw -Plug: 3.5mm Stereo Gold-plated plug -Cable length: 1.25m Package Includes: 1x Hybrid Dual Driver Headphone 1x Carry Case 4x Ear Buds Set