So, you play bass and you want that powerful distinctive …

https://www.musical-u.com/learn/how-can-i-improve-my-bass-guitar-tone/
So, you play bass and you want that powerful distinctive tone that will set you apart as a serious player and give you the control and expression you need to have a powerful musical impact.

There are three main areas to think about in bass tone ear training, which falls under the general category of timbre ear training.