Bests & Worsts Reviews from Amazon

Bought one and tried echo 2nd gen and was impressed by the sound quality (it was close to "surround sound" quality) so I bought 4 more echo 2nd gen and everyone in my household was happy with all of 'em. After 4 months past, I noticed the sound is not quite awesome as it was (now, it sounded like "mono") seems like the bass is not sync, something about the sound is off. Seems like Amazon pushed out an update and downgraded the sound quality. It still plays music at sub-par quality but that's not what I paid for! Amazon, please maintain the quality of your products. [UPDATE:] 8/15/2018 Amazon's review team has informed me that they've added an equalizer feature....that's fantastic! Now I have to adjust the bass, midrange and treble myself to try and get the best sound quality....great! I know some people has requested this feature and Amazon is awesome for listening and responding to customers. When I buy a smart gadget I expect to get rid off some of the guess work but It's also good to have an override switch to everything. People nowadays likes plug-n-play, set-n-forget but also wants to tinker to get to that sweet spot, I know! people are complicated but so as music. And did I mention I have 5 of these? so that means I have to tinker on each one? and tinker again for every music being played? PROPOSED SOLUTION (for your developers): Make the echo smart enough to determine (by itself) the best sound quality for the music being played and this will be known as the auto sound feature which is shipped by default - this will cater to mostly everyone. And the equalizer will be known as the manual sound feature that will cater the rest.