I connected the cable TV with my Sony dock and my Bravia and the Full HD image is excellent. Here, the cable is approximately 3m long and therefore is Hiner my TV right next to the power strip. However, it is thus still no image (or sound) to detect interference. Neither you're surfing the Internet, even when playing First Person Action Games I can complain about loss of quality.
Other reviews about broken image or poor sound transmission are therefore not understandable for me. Presumably, this is incorrect settings for resolution and frame rate.
I'm thrilled and would buy this product at any time, and fully recommend.