PW Audio Mini Adapter CM (F) to Fitear(M)

Although there are some headphone cable brands on the market that come with interchangeable plugs, these plugs are always fixed to the headphone cable and cannot be easily changed. In order to balance practicality, durability, and convenience, PWAudio has developed this metal mini adapter for easy use. The materials used for the Mini Adapter are "beryllium copper-plated gold." The ideal headphone plug adapter should not alter the sound quality, but commonly available brass-plated gold adapters have higher resistance, which affects the detail performance. PWAudio uses beryllium copper for the Mini Adapter because it has a higher conductivity and lower resistance. Additionally, the plating is intentionally thickened to increase the current flow and better preserve the original sound performance. Moreover, beryllium copper is the best high-performance flexible material among copper alloys. It has high strength, elasticity, hardness, fatigue strength, minimal elastic hysteresis, corrosion resistance, wear resistance, and cold resistance, making it more durable for the adapter.

CM 2Pin to MMCX:  Suitable for majority MMCX socket, including Sony, Sennheiser IE900, Obravo...
CM 2Pin to IPX: Suitable for UE and even embedded IPX socket.. ( paid for licences)  
CM 2Pin to Pentaconn Ear: Suitable for common PE socket.