ANDTOBO 1/4'' to 3.5mm Stereo Pure Copper Headphone Adapter, 1/8'' Plug Male to 1/4''（6.35 mm） Jack Female Stereo Adapter for Headphone, Amp Adapter, Black 1-Pack

Work for for 3.5mm jack equipment, Connect 3.5mm Male to 6.35mm Female（1/8" to 1/4" adapter）, allows you connect headphones to audio devices
Made of pure copper and it's service life is much longer than plastic and gold plating.
Pure copper connectors resist corrosion and ensure minimal signal loss.
Handy and portable, widely work with earphone, headphone, karaoke system and etc.
100% Lifetime warranty, and friend customer service.