About this item This 1/8 to 1/4 adapter is a 3.5mm Female jack into a 6.35mm Male plug adapter, designed for connecting smartphones, tablets, MP3 players, or headphones with standard 3.5mm plugs to audio devices with a 6.35mm stereo jack. It's perfect for use as a piano keyboard to headphones adapter, guitar amp to speaker adapter, amplifier to headphones adapter, or mixing console to speaker adapter. 300cm-More-Length: The 300cm durable and premium soft PVC jacket extension cable provides more available space between two connected devices. This adapter is very portable, with quick response, tight connection, and flexibility to convert a 6.35mm port to a 3.5mm port. (Please ensure that the devices you use have a stereo TRS jack, as this adapter transfers audio only and does not support a microphone.) Qualified Audio Adapter: This 3.5mm to 1/4 headphone adapter features 24K gold-plated connectors to ensure high stability and high-speed lossless transmission. The metal housing provides w