CESS 4-Pole Stereo Balanced 3.5mm 1/8" Male to 2.5mm 4-Pole Female M/F Adapter - 3.5mm 4 Pole Male to 2.5mm Female (2 Pack) 3.5mm 4-pole male to 2.5mm 4-pole female adapter Can be use 2.5mm 4-pole Plug Work to 3.5mm 4-pole Jack & Socket TRRS 4-Pin type Gold-plating resists corrosion and ensures minimal signal loss Great Adapter Is super easy to install