A set of over-the-head headphones, facing front.

Headphones

A pair of front-facing headphones with a mic. 

Headset

An electronic music speaker, amplifier or sound system.

A music note icon for beaming quavers or two eighth notes.

A double music note of two beaming quavers or two eighth notes.

A busy and overworked manager or employee surrounded by charts, graphs, and notifications.