Out of a desire to simplify (and general curiosity), I sheepishly admit to recently trying out both Apple's HomePod and Google's Home Max as stereo system replacements. They can be used with Bluetooth, but most people use them to directly stream music from Spotify, Apple Music, Tidal, etc. While they were both easy to set up as stereo pairs and sounded reasonably good, they absolutely cannot replace a standard stereo system. Even with built-in DSP/sound correction, they lack the dynamics and general presence of my dumb speakers. There were a few other nitpicky things that I disliked about each smart speaker (e.g. connectivity and restricted ecosystems). I gave each pair of smart speakers about ten days of solid use before returning them. However, if I didn't know better from prior experience with proper stereo setups, I probably would have been quite content with keeping either pair of smart speakers (I give an edge to the Google Home Max). With that said, we do have an original Amazon Echo device in the kitchen that is good enough for background listening and setting timers.