Cardionics Cable For Direct Audio Input - 1 Euro Plug Accessory. This patch cord cable connects the Cardionics E-Scope stethoscope to a personal audio device. This 3.5mm patch cord cable is an adapter cord for the Cardionics E-Scope amplified stethoscope (718-7710 model). The patch cord plugs into the stethoscope's USB port, connecting the E-Scope stethoscope with personal audio devices and cochlear implants. Sixty-centimeter long cable for direct audio input. Connects to audio shoe of a BTE hearing aid with a three-prong Euro plug. Proximal end connects to E-Scope Electronic Stethoscope output.