Do you lose quality with a 10m HDMI cable?

Supposedly, the quality of the transmission should decrease when using longer HDMI cables from 10m length. We'll tell you if that's true.

Do longer HDMI cables result in loss of quality?

• Lengths of 10 or 20 meters are theoretically no problem for lossless transmission with HDMI cables, as long as the quality is right. However, if the cables are of poor quality, the loss rate often increases with the length of the cable.
• The operating voltage of HDMI cables is 3.3 volts. The tolerance range is quite small: only 5 percent deviation from the said voltage is allowed.
• Many devices such as televisions or DVD players are already using this tolerance range, so they do not give off the 3.3 volt voltage exactly. If a single damaged contact is added to this circumstance, the tolerance is exhausted too much so that the quality decreases. Such damage is caused by slight corrosion or abrasion by plugging and unplugging the cable.
• The longer the cable, the more the actual voltage can deviate from the required one. Thus there are losses in quality. However, this cannot usually happen with well-made cables.
• Conclusion: When buying a longer HDMI cable, pay attention to the quality of the cable. This can not only be determined by the price, but also by the customer reviews. If several customers report no losses on a cheap cable, you can also access them there.

In this practical tip, we explain exactly what is the difference between HDMI and DVI.