Cayin has a reputation for making exquisite audio products with ultimate build and sonic qualities. The Fantasy is their first single DD pair of IEMs that reflects their beautiful craftsmanship. Large Dual-Cavity Dynamic Driver Unit The Cayin Fantasy features a 10.3mm dual-cavity dynamic driver unit with a two-way magnetic structure. It has a Beryllium-plated diaphragm material that combined with strong magnetic force gets swift movement resulting in an excellent sound quality output. Premium 316L Stainless Steel Earpieces Cayin is known for its excellent craftsmanship. The Fantasy is no different, the pair features premium Stainless-Steel earpieces crafted with high-precision CNC machining technology. It not only looks beautiful but also provides a super comfortable music listening experience. Low Power Requirement, Easy Driveability Cayin Fantasy has got a low impedance rating of just 37 ohms with a high sensitivity rating of 108dB. It can be powered easily using smartphones but using a Hi-Res player is recommended for best performance. 2-Pin Detachable Cable The Cayin Fantasy has standard 2-pin 0.78mm connectors. The pair comes with a high-quality cable made using OCC and Silver-Plated cores and has a 3.5mm termination for universal compatibility with different sources.