FiiO FD3 / FD3 Pro 12mm DLC Diaphragm Dynamic Driver IEMs

*The curve is measured by a third party and is for reference only. Features:- >Powerful 12mm Dynamic Driver With DLC Diamond Diaphragm. >Strong 1.5T Magnetic Flux. >6-Series Aluminum-Magnesium Alloy Cavities. >Front Cavity Acoustic Prism Design. >FiiO’s Patented Air Pressure Relief Technology With Semi-Open Rear Cavity Design. >Interchangeable Ear Nozzle. >High-Purity Cable. >Interchangeable termination plugs in FD3 Pro cable. >Standard MMCX Connectors(MMCX assist tool included in the package). >Impedance: 32Ω. >Frequency Response: 10Hz-40kHz. >Sensitivity: 109dB@1mW. >Weight(Per unit): about 7 grams(excluding cable). FiiO has introduced two new additions to their “FD” series of single-Dynamic IEMs, the brand-new FiiO FD3, and FD3 Pro. FiiO has developed a new 12mm dynamic driver unit with a DLC Diamond diaphragm that delivers a powerful performance with both the FD3 and FD3 Pro. They have featured patented Pressure Air-Relief technology with a semi-open rear cavity design. The front cavity has a premium acoustic prism technology that helps in maintaining a proper phase in the output signal.