Audio Coupler 3.5mm Stereo Jack Socket to 3.5mm Stereo Jack Socket

Coupler 3.5mm Stereo Socket - 3.5mm Stereo SocketA back-to-back coupler with sockets at both ends, to join 2 x 3.5mm stereo jack leads together. Ideal for balanced mono and unbalanced stereo audio signals.

Price: 2.29 from Boxed2me