Cold Harbour Media talks about tube generation as they review the Photonis 4G High Gain tubes... "Explore the intricacies of NVG Tubes beyond the typical 'Generation' classification. In this long awaited video, Ryan delves into the innovative Photonis 4G High Gain tubes, challenging conventional notions and how well these tube perform. Discover the advancements and practical applications of these "Generation 2+" tubes in comparison to existing offerings. Join us for an insightful examination that reshapes your understanding of NOD technology."