DDHiFi E13P Memory 4.4

The Memory 4.4 features a custom 13mm ultra-linear planar magnetic driver co-developed with MOONDROP. Its dual-suspension ring-type magnetic circuit with a four-magnet array delivers 4× the transduction efficiency of equivalent dynamic drivers and 10× that of conventional 14.5mm planar units. The result is a compact driver capable of deep bass, transparent clarity, and low distortion even during large dynamic swings, all easily driven from lowpower sources. Two Distinctive Chassis, One Acoustic Intent Memory 4.4 comes in two chassis variants. The Memory Pd4.4 uses pure copper shells with a palladium-plated finish for superior passive noise isolation and a more substantial in-ear feel. The Memory AL4.4 features AL6063 aviation aluminum CNC-formed shells for an exceptionally lightweight build. Both versions share identical dimensions, driver configuration, and connector architecture, offering a simple choice based on material and wearing preference without any difference in acoustic design.