Key Specifications
According to Amazon's official specifications, the 2nd Generation Fire TV Stick 4K Max features several hardware upgrades over its predecessor: Wi-Fi Connectivity: Tri-band support for 2.4 GHz, 5 GHz, and the new 6 GHz (Wi-Fi 6E).
Processor: A powerful 2.0 GHz quad-core processor for faster app starts and smoother navigation.
Storage: 16GB of internal storage, which is double the capacity of previous models.
Picture & Sound: Supports 4K Ultra HD, Dolby Vision, HDR10+, and Dolby Atmos audio.
Remote: Includes the Alexa Voice Remote Enhanced, which adds dedicated buttons for recent apps and live TV channel surfing.
Wi-Fi 6E Benefits & Requirements
Reviewers from PCMag and What Hi-Fi? note that while Wi-Fi 6E is a significant technical upgrade, its benefits are specific to certain setups:
Compatible Router Required: To use the 6 GHz band, you must have a Wi-Fi 6E router such as the eero Pro 6E.
Reduced Interference: The 6 GHz spectrum is generally less crowded, leading to lower latency and more reliable streaming in dense areas.
Backward Compatibility: The stick remains compatible with older Wi-Fi 5 and Wi-Fi 6 routers if a 6E router is not available.

Exclusive Features
Fire TV Ambient Experience: This feature, previously only on Fire TV sets, allows the stick to display over 2,000 pieces of museum-quality art and helpful Alexa widgets when not in use.
Cloud Gaming: The device supports Xbox Game Pass Ultimate and Amazon Luna, allowing users to stream high-quality games directly to their TV without a console.