Linsoul Kiwi Ears KE4 Hybrid High-End HiFi Earphones feature a 2DD+2BA diaphragm structure, dual custom 10mm dynamic diaphragms, and one Knowles

[New IEM Design] The KE4 has been completely redesigned, combining an isobaric subwoofer system with two dynamic drivers (2DD) and two balanced armature (2BA) full-range and tweeter speakers. Two Kiwi Ears custom 10mm dynamic drivers focus on the impact and slam of sub-bass, enhancing the presence of kick drums and bass guitars. The RAD 33518 BA driver with a customized ventilation system ensures seamless integration of bass and midrange frequencies, delivering rich, textured vocals and instruments.The American-made Knowles RAD 33518 tweeter delivers clean, natural-sounding treble with excellent high-frequency extension, creating an airy sound. [Sound Quality Superiority] The KE4 continues Kiwi Ears' commitment to superior sound quality balance. Following new target tuning, the KE4 emphasizes precise sub-bass impact, warm and natural midrange, and precise treble. This sound quality characteristic has been refined over many years and we believe it to be the most natural and engaging. This sound quality characteristic is suitable for all purposes, from music listening and gaming to professional stage monitoring and sound engineering. [Precisely Engineered] The Kiwi Ears KE4 is handcrafted from start to finish. Featuring a 3-way passive crossover system and three independent acoustic tubes, every detail of acoustic engineering has been considered to achieve its tuning. The shells are crafted from medical-grade resin and are adorned with a hand-finished faceplate. [About Kiwi Ears] We are a small, international group of engineers whose goal is to provide acoustic solutions for musicians and audiophiles. We focus on innovating our technology drivers and developing sophisticated tuning strategies to bring out every nuance in your music and performance. Our small team of dedicated engineers handcrafts each unit so you can focus on the sound you create, not what's going into your ears. We deliver melodies that resonate with your soul.