From the earphone brand "Acoustune" based on its own dynamic driver, the next generation is equipped with an improved 3rd generation Milinks driver and uses stainless steel with a strong resonance suppression effect in the acoustic chamber. Dynamic sealed

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 changing and improving in subtle places.

HS1600系列採用經改良的雙層金屬機殼，單元及MMCX插座安裝在兩個獨立箱體之中，既可減低外來震動對單元的影響，亦可阻止單元震動對插座的影響，發聲及訊號傳輸都可達至最穩定的狀態，確保高音質，為了讓耳機有更佳佩戴感，耳機外層箱體以及內層箱體的背部均用上純鋁製作，而內層箱體中間部分及管道位置則用另一種金屬作調音之用，HS1650 CU所用的是黃銅，低頻較具下潛力，音色和暖自然。