D’Addario Coupler PW-P047T ¼” Stereo Female to ¼”EXTEND CABLE LENGTH: Quickly and easily extend the length of cables. Simply connect this coupler between two cables to create one convenient longer cable. With a secure connection and no static, its just like you plugged directly in. MAX POWER, LOW NOISE: The female to female stereo adapter utilizes the highest quality conductors and components to provide convenience, maximum power and clean signal transfer. IN=OUT TECHNOLOGY: DAddario Accessories