Amazon Echo 4-gen vs Amazon Echo 3-gen: What's the difference?
Amazon Echo Dot vs. Amazon Echo Pop: Which one should you buy? - Reviewed
What Is Alexa (and What's the Best Alexa Speaker for 2023)? | Reviews by Wirecutter
Amazon Echo (4th Gen) vs Amazon Echo (3rd Gen) – Which is best?
Amazon.com: Made for Amazon Battery Base, in Black for Echo Dot (4th generation) Not compatible with previous generations of Echo or Echo Dot (1st Gen, 2nd Gen, or 3rd Gen). : Everything
All-new Echo (4th Gen) | With premium sound, smart home hub, and Alexa | Charcoal
Amazon Echo Dot (4th Gen) vs. Amazon Echo Dot (3rd Gen) | Android Central
New Amazon Echo Dot 4 vs 3 - Should You Upgrade? - YouTube
For those who have both Echo 4 and one of those old JBL charge or UE 1-3 speakers, how does the sound compare? : r/amazonecho