3.5mm to 3.5mm Stereo Jack Adapter 3.5mm Female/Female Coupler Black Gender Changer, 3.5mm stereo couplers are excellent for joining two audio cables together, or changing a male plug into a 3.5mm female jack. 3.5 mm stereo jack to 3.5mm stereo jack Adaptor Use with PC, stereo, MP3 players etc. Perfect for Eurorack patch cable extension. Go ahead and make the right connection with this 3.5 mm audio coupler, and splice together two 3.5 mm Package Contents: 5 x 1/8 in Audio Female/ Female Adapter Connectors