What is the maximum allowable cable length for HDMI without loss of quality?

The maximum allowable cable length for HDMI without loss of quality is typically around 50 feet for standard HDMI cables. This length is influenced by the factors such as the HDMI version, cable quality, and the type of signal being transmitted. Over longer distances, HDMI signals are susceptible to degradation due to attenuation, which can lead to signal loss and reduced image quality. Various specifications and tests have determined that up to 50 feet generally maintains good quality for most standard HDMI cables, allowing for clear audio and video transmission.

It's essential to note that while some high-quality HDMI cables may function reliably over longer distances—up to 100 feet or more in some cases—this is not typical for standard cables and may require additional technology, such as signal boosters or active HDMI cables, to ensure quality is preserved over such distances. Thus, while options suggesting longer lengths exist, they generally rely on specific conditions or higher-grade cables beyond what standard HDMI offers.