GEEK WOLD GK300 8BA+2EST+1Planar+1DD HiFi In-Ear Monitors EarphonesGEEK WOLD GK300 8BA+2EST+1Planar+1DD HiFi In Ear Monitors Earphones Key Features Eight Balanced Armatures (BA): Four BAs for mid frequencies, providing clear and transparent vocals with high resolution and fine detail. Two BAs for high frequencies, offering rich details, high resolution, and accurate instrument timbre. Two BAs for extremely high frequencies, enhancing high frequency extension, spatial sense, and enriching details. Two Piezoelectric