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The sound quality of this product is characterized by a large sound field in both vertical and horizontal directions, and excellent layered separation. You can feel that various instruments/singing voices are coming from different directions and distances, and the various instruments/singing voices are orderly and do not interfere with each other. The high-frequency extension is good and the sound density is high, which can cover various noises. You can hear the music clearly even at a very low volume, avoiding the damage to the ears caused by high volume.

The dynamic armatures power two Knowles composite drivers, providing excellent mid-range vocals and high-frequency overtones. This Knowles driver is a custom-made mid-bass driver with a rear port. The mid-bass is higher than standard Knowles drivers without rear ports, and the vocals are also relatively better.

Bio-diaphragm dynamic drivers
Produced by a renowned Taiwanese acoustics company. This company also supplies AKG and the dynamic drivers for the UESF5EB, the world's first toe-mounted headphone.

The cable is a four-core copper-silver alloy silver-plated wire, which is second only to pure silver in conductivity. Each core has 82 wires with a diameter of 0.05mm. The base wire has good conductivity and is thick enough for strong signal transmission.

Customized silver-plated headphone jack has good conductivity and effectively reduces signal loss

The flying wires in the earphones have the same good conductivity as the wires and are thick enough to provide sufficient signal to each unit.

The design of the main and auxiliary moving irons: the main moving iron passes directly through the sound outlet to reduce high-frequency signal loss, enhance high-frequency overtones, and the auxiliary moving iron increases sound density.

We refuse to stack units on the one hand because each unit consumes the ultra-high frequency signal, making the signal of the high-frequency unit weaker. On the other hand, if there are too many units, the units have to be placed at the back, causing the sound tube to be too long and too thin, and the high-frequency overtones cannot come out.

The Fulais' unique tunable design allows for four different colored tuning tubes to create a unique sound. The gold tubes are for vocals, creating a closer, more emotional vocal experience. The QIANSE sound is ideal for string instruments, with a bright, mellow tone and a vibrant bass.

6 sizes of earmuffs, with diameters ranging from 9mm to 14.2mm, and two hardness levels to provide a comfortable wearing experience for various ear cavities

The earmuffs are specially made. The front end is flared to facilitate the output of high-frequency overtones.