Adjust Volume Level with Voice
Every Amazon Echo has physical buttons or a dial to adjust its volume. Tell Alexa to change your volume level instead of using those methods.
Say, "Alexa, volume 5” and she will adjust your Echo’s internal speaker up or down to half its total volume. Maximum volume is 10. Keep in mind that Alexa won’t reset your Echo’s volume once you finish whatever you are doing. The next time you ask her for something, she will still be at that volume. That’s why it’s a good idea to adjust the volume to 5 when you stop listening to music.