• The MillSO 3.5 to 6.3 mm jack adapter converts a 3.5 mm TRS connector to a 6.35 mm TRS jack. It is ideal for connecting 6.35 mm headphones to a 3.5 mm audio jack system. • 24-carat gold-plated connectors, sapphire blue metal housing, and soft PVC cover protect the stereo adapter from oxidation and corrosion, not only ensuring an exquisite appearance but also maximum conductivity, durability, and lossless sound transmission. • With a length of 20 cm, the MillSO 3.5 to 6.35 auxiliary adapter cable is very portable and perfect for pianos, guitars, mixers, amplifiers, or speakers with a 6.35 mm jack connector. Easy to connect to smartphones, laptops, tablets, portable CD Discman players, MP3 players, or other devices with a 3.5 mm female connector. • MillSO 6.35 mm to 3.5 mm audio converter with solid copper inner conductor and high-quality shielding that transmits high-purity audio signal with minimal loss.