Macaw RT-10 interchangeable panel hifi earphones RT-10 is Macaw first panel replaceable HiFi earphones. Using IML in-mold insert injection process on the headset panel, and boldly attempt the removable design, which gives the headset stronger creativity and vitality. With the standard 3.5mm earphone plug, RT-10 can be used on most portable player devices, such as smart phones, tablets, notebooks, MP3 or professional audio players.