MDR Electronics manufactures 2.5mm EP Stereo Female to EP Female Digital Link Cord. This is used as extender. This 2.5mm EP Stereo Female to EP Female Digital Link Cord provides cable protection also the cable is high quality so it does not suffer from insertion loss. MDR Electronics is an ISO 9001:2008 and ISO 14001:2008 certified company. MDR Electronics is also into manufacturing of Audio/Video, Pro-Audio Cables, Connectors & Cords, Electronic & Computer/Laptop Accessories, Cable Organizers, Fiber Optic Series, and Cable TV Series, under the trade name MX.