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In each generation of Acoustune earphones, we can see Japanese craftspeople’s never-ending pursuit of product quality, insisting on their own characteristics in basic design, and then making subtle changes and improvements. The latest HS1657CU in 2020 has the shadow of the previous HS1655CU. , But the shell is changed from pure white to cool black, and the internal design of the brass cabinet is re-adjusted, and the sound is even more reborn.

Redesigned cabinet

acoustune hs1657

HS1657CU is an updated version of HS1655CU. The main design is roughly the same. It continues the classic double-layer metal case design. The unit and the wire change socket are installed in two independent boxes to reduce the impact of resonance. The HS1657CU is made of pure aluminum. The entire box and pipes of the unit are made of brass, and the interior has been redesigned to use the 4th generation Myrinx 10mm moving coil unit. The low-frequency capacity and power are endless. It has a deep low-frequency output and a greater analysis power for the intermediate frequency. It has been improved. While retaining the warm and full characteristics of the brass cabinet, the tone orientation of the earphones is also slightly adjusted to be more balanced, which is more durable than the previous generation.


Configure luxury Pentaconn Ear headphone cable

acoustune hs1657

HS1657CU still uses Pentaconn Ear plugs. This plug for high-end in-ear headphones is more stable and durable than MMCX. The plug and socket are in closer contact with each other, and the conduction performance is better. It is also better than MMCX during installation and removal. Simple and convenient, can reduce the chance of accidental damage to the plug. The cable with the camera is Acoustune’s latest ARC51 headphone cable. This 8-core cable made of silver-plated OFC copper and OFC copper has a good balance between sound quality and portability. The black cable body and matt black HS1657CU is a match made in heaven.

acoustune hs1657


HS1657CU product specifications

Unit: 10mm 4th generation Myrinx dynamic unit
Frequency response: 10Hz – 25kHz
Sensitivity: 110dB/mW
Impedance: 24 Ohms
Accessories: ARC51 headphone cable, 4 styles/9 pairs of AET ear glue, aluminum protective box, carrying case, headphone clip
Color: matt black/gold

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