Hardware generating MIDI control information.

Hardware connecting MIDI musical devices to a computer.

Hardware connecting microphones, instruments, and computers.

Hardware providing audio input, output, or processing.

Speaker enclosure element that resonates without a voice coil.

Speaker designed for very low-frequency sound.

Speaker driver designed primarily for low frequencies.

Speaker driver designed for middle frequencies.

Speaker driver designed primarily for high frequencies.

Electroacoustic device converting electrical signals into sound.