Audio Manage Audio

Hi guys, i'm programming my videogame event driven, like this article
https://unity3d.com/how-to/architect-with-scriptable-objects
I'm now implementing the audio system and i have some doubts. For example i have to implement:
-sound when picking up a power up
-sound when shooting
-and many other base sounds
In my case i have an event "PowerUpPicked" that is raised when a pickup collides with the player. I have the event listener attached to the Player game object that i use to call a function in my shooting script to increase for example rate fire. At the moment i use the same event listener to play the sound when a powerup is picked and it works fine but i think it's not correct way because if i attach sounds separately to every game object that i need will be a messy.
First question: should i create just a game object that will manage all sounds for my game or a sound manager for every game object (player, enemies, etc...)?. For example -> PlayerSoundManager will manage jump sound, shooting etc...
Second question: if i use this method i will get multiple events listeners that wait for the same event, is it a good idea?. For example: the listener attached to the sound manger used to play the sound and the listener attached to the player for increasing the fire rate.
Any suggestion is appreciated