A4000

A4000 has started with a new development and production base to achieve the sound quality of this price. A new 6mmφ dynamic driver has been newly designed, including not only parts but also production equipment. The sound quality is designed based on FINAL's unique evaluation method established during the development of A8000, a flagship earphone. A wide range of music is realized in a wide range of music, called a "transparent sound" that can be heard clearly at a distant sound.

The results of the new sound quality evaluation method

The development of the A series started by establishing a new evaluation method based on the analysis of the relationship between sound quality and physical characteristics, and the results were fruitful as A8000. The A4000 has evolved the evaluation method further. We listen to music recorded with various quality at a variety of volume. However, in the conventional evaluation method, it was common to perform subjective evaluation under the fixed conditions of the sound pressure presenting sound, and it was difficult to judge a good sound that was in line with the actual product audition. Therefore, as a result of new research on the evaluation method in line with the actual music listening status, we believe that the definitive product in this price range was imposed.

Equipped with a completely new design driver unit "F-Core Du" (Ef Core DU)

In order to achieve high -quality sound quality that is impossible in this price range, a new base will be set overseas, and driver parts such as diaphragm, voice coil, magnet, magnetic circuit, and each part of each part are newly designed, and completely new. The design 6mmφ dynamic driver unit "F-Core Du" has been developed. The material of the driver front housing uses brass that is less likely to be affected by magnetic force and has a higher specific gravity than ordinary aluminum. In order to improve the time response performance of the diaphragm, the voice coil uses a 30μ ultra -fine CCAW, and the movable portion is thoroughly lighter by assembling it with a minimum adhesive. Furthermore, the diaphragm is carefully pressed with a small lot of about 1/3 of normal, minimizing the bias of pressure, and achieving uniform diaphragms without distortion.

Feeling of mounting as if customized

The 2pin connector is a high -precision owned product. The φ0.78 standard, which is considered to be the most versatile, is adopted. It is a soft and supple coated material in consideration of touch noise.

2pin connector + original OFC cable

The 2pin connector is a high -precision owned product. The φ0.78 standard, which is considered to be the most versatile, is adopted. It is a soft and supple coated material in consideration of touch noise.