Usage: 6.35mm to 3.5mm stereo audio adapter allows you to connect your headphones or microphones with 1/8 inch plugs to audio devices such as home audio, amplifiers, guitar and piano with 1/4 inch stereo jack. Gold-plated Pure Copper: Minimized the signal loss and preserving the sound quality. Increase Compatibility: Tested and inspected to meet all 6.35mm male to 3.5mm female plugs. Quick and Simple: Fool-proof 360 grip trends design with no installation required- simply to plug and play.