Audio Controls (Equalizer) for Echo devices don't affect external speakers
With new equalizer feature, Amazon Echo devices get bass and treble control - GeekWire
Amazon Echo Buds review
How to adjust Alexa's equaliser and sound on Amazon Echo
How to Adjust the Sound Settings on Your Amazon Echo | Digital Trends
/alexa-app-home-page-settings-1688-1000-yellow-dc8a40d9f4fc40fe934c1f7fbcce66ae.jpg "How to Play Music on Alexa")
How to Play Music on Alexa
What are good equalizer settings? - Quora
The 15 coolest things you can do with your Amazon Echo - CNET
Amazon's Echo Devices Gain Voice-Controlled Audio Equalizer Settings | Audioholics
Using Alexa's Built-in EQ Feature | Smart Speaker Stuff
Equalizer has been added to Settings in the Alexa app! (1st-gen Echo) : r/amazonecho
How to Set Up Multi-Room Music on Your Alexa Speakers : HelloTech How
How to control bass on Echo Show 5 - The Big Tech Question
How to Bass Boost Amazon Echo or Echo Dot Speaker - MashTips
Echo Equalizer Settings : r/amazonecho
Alexa, Get The Party Started' - Amazon Now Lets You Play Your Music In Multiple Rooms
Echo Equalizer Settings : r/amazonecho
How to change the EQ controls on your Echo Buds | Android Central
Alexa, turn up the bass! Amazon rolls out equalizer controls for Echo devices - CNET
How to Set Up Multi-Room Music on Your Alexa Speakers : HelloTech How
How to Get the Best Sound Quality in Spotify
Alexa, Crank Up the Bass! Announcing Equalizer and Sound Mode Controls for Smart Home Entertainment Devices : Alexa Blogs
