UGREEN Mini Plug 3.5mm (Female) ↔ Standard Plug 6.35mm (Male) Stereo Adapter [New, Unused] 24K Gold-Plated Connector, Compatible with Headphones/Amplifiers/Electronic Pianos/Earphones/Mixers/Players, etc. I purchased this on Amazon about a year ago for 999 yen and stored it, but I ended up not using it even once, so I'm selling it. It's new and unused, but it has been opened, so please take a good look at the images and make your decision (no returns). ⚫︎About this product Connector specifications: 3.5mm stereo mini plug - female; 6.35mm stereo standard plug - male. Converts a stereo mini plug, commonly used in headphones, etc., to a standard (phone) stereo standard jack for stereo amplifiers, standalone audio equipment, electronic musical instruments, etc. Gold-plated plugs reduce connection resistance and are resistant to rust, preventing sound degradation due to aging. Compatible with headphones, amplifiers, electronic pianos, earphones, mixers, players, etc.