ddHifi Memory Pd4.4 Retro Planar IEM

Featuring a precision-machined pure copper housing with meticulously controlled wall thickness. The Memory 4.4 features a revolutionary 13mm ultra-linear,full-range annular planar unit. Crafted from premium microfiber leather and equipped with YKK zippers,the interior features dedicated compartments to keep the left and right metal earpieces separated. Driver Configuration 13mm Planar Driver Plug 4.4mm Effective Frequency Response Range 20Hz-20kHz Impedance 16Ω±15% (@1kHz) Sensitivity 121dB/Vrms(@1kHz) THD ≤0.1%(@1kHz) Housing Palladium-Plated Pure Copper Housing Cable Black Braided 6N OCC Cable Weight Approx. 31g Length 120cm