I dont have any other device to check the cable on. It is new and the one recommended for its purpose. I only need to know whether the sound should be stereo and emitting from both speakers or if it is usual for the sound to come from only one speaker - if it usual to be stereo sound then I will need to return the cable supplied and seek an alternative. Thank you for your helpAre you certain the "relevant cable" works properly with any other device?