Stereo

An electronic music speaker, amplifier or sound system.

Speaker

Two gears of different sizes surrounded by three sparkles.

A stereo set or system with two identical speakers and audio source/amplifier in between.

A graphic sad expression with X eyes, meaning a dead face for a virus or a crashed system.

A round cog or gear with concentric circles and many flat teeth.

An outlined rectangular shape with curved edges, or a screen, showing a 

A large industrial cooking system with ovens, knobs and stovetops for a professional kitchen.

A front-facing rectangular speaker, amplifier or sound system with two round shapes.

An electronic music speaker, guitar amplifier or sound system.

Two gears, a bigger one and a smaller one.

Solar system with planets, their orbits and a moon.

A front-facing electronic music speaker, amplifier or sound system.

A rectangular electronic music speaker, guitar amplifier or sound system with two round shapes, a big one and a small one.

An eight-pointed star alongside two gears. 

A computer monitor showing a crashed system on its screen, represented by a face with X eyes.

A vertical, rectangular computer server with wires and buttons along its height.

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