Is there a difference in picture and sound quality between expensive and cheap HDMI cables? - NO, HDMI is HDMI. All HDMI cables, the TMDS technology (Transition Minimized Differential Signaling) is used. There are two versions of the transmitted data stream over different wires. Thus, transmission errors and faults can be avoided. You will not notice any difference in picture and sound quality between a cheap and an expensive cable. Even professional laboratory tests showed that there is no difference. However, there are different classes HDMI and some feature an Ethernet channel.
This 3-meter HDMI cable meets the highest HDMI class and has an Ethernet channel. The cable is Ultra HD (4x Full HD) and 3D capable. The cable makes a very high-quality optical impression.
The cable works fine and I can recommend it without hesitation!