Google Home devices sound great right out of the box, but there are ways to improve the sound quality. For example, use the Google Home app to find the best equalizer settings for your Google Home. You can also pair your Google Home with a Bluetooth speaker or Chromecast device.
Google has added an equalizer tool to the Google Home app that lets you adjust the treble and bass of your smart speaker.
Open the Google Home app on your Android or iOS device and tap the Google Home device you want to adjust.
At the top of the device display, you will see three icons. The one furthest to the left is the equalizer icon. Tap it to open the equalizer controls.