6.35MM MALE TO 3.5MM FEMALE CONVERTER: headphone adapter is a convenient and cost-effective way to connect smartphones, tablets, iPod or headphones with standard 3.5mm 1/8 inch jack to most pro audio devices with a 6.35mm 1/4 inch stereo jack such as amp, electric /digital piano, Yahama keyboard, home theater, AV receivers, etc.<br> HEADPHONE JACK ADAPTER: This 3.5mm to 6.35mm stereo jack socket adapts a 3.5mm to 6.35mm stereo audio plug, allows you to use any ordinary pair of headphones to play a digital piano in isolation. No more worrying about disturbing your family and roommates. The perfect way to save a lot of money on new headphones and enjoy a stereo quality sound.<br> EXCELLENT WORKMANSHIP: Made of high-quality brass copper, gold-plating connectors resists corrosion and ensures a minimal signal loss, solid construction ensures a reliable connection with other cables and adapter. Designed with a long lasting service life compared to those plastic connectors with metal paint.<br> PLUG AND PLAY: This Jack Plug Adapter is capable of connecting any 3.5 mm jack socket with 6.5 mm jack, 360-degree grip treads make it easier to plug and unplug. With the compact and lightweight design, easy to carry around for school, work and holiday.