X3R TrueResponse transducer technology offers balanced sound with ultra-revealing detail. Helmholtz resonator chambers unmask critical audio details even during extended listening sessions. Gold-plated Fidelity MMCX connectors for improved stability. Choice of para-aramid reinforced cables (2.5mm 3.5mm and 4.4mm). Precision-milled and anodized aluminum housing. Includes: Balanced cable with 2.5mm connector. Unbalanced cable with 3.5mm connector. Balanced cable with 4.4mm connector. 3 Pairs of silicone adapters. 3 Pairs of foam ear adapters.