VIMVIP 6.5 to 3.5 Adapter 6.5mm to 3.5mm Male to Female Microphone MIC/Audio Adapter (Gold) 6.5mm male to 3.5mm female Audio Adapter. Gold-plated oxygen-free copper. Easy to use ordinary 3.5 6.5 headphone jack on the amplifier. Gold-plated plugs, sound good! Packing:Inclue 1 Piece 3.5 to 6.5mm Audio Adapter.