Crane is the ESD Acoustic’s main floor-standing speaker, with three sound channels and four units per channel, two of which are beryllium diaphragm horn units and two are titanium sandwich composite diaphragm cone units.The world's only calendered beryllium diaphragms by Truextent, with higher resolution and lower distortion, are applied on mid-range and super tweeter units.Exclusive titanium sandwich bass diaphragms are light and strong, which eliminates segmentation distortion and phase distortion.The field coil power supply with built-in AI technology basically offsets the back electromotive force and solves a century-old problem.The speaker unit with a magnetic density of 2.2T, powerful magnetic flux controls the speaker with ease.The carbon fiber horn has no sound dyeing, and the mid-frequency is rounded.Uncompromising cabinet design, all aviation aluminum CNC precision machining, and through the simulation design of the lining reinforcement ribs, anti-resonance materials, the cabinet sound dyeing is minimized.The innovative combination mode of active crossover and passive crossover makes the whole range smoother, and the sound is more natural and relaxed.Very low distortion, very high cost-effectiveness, what else can outmatch it?