Adding echo to a microphone can be accomplished by adding a hardware device for live or computer applications, or a software plug-in if using your mic solely with computer-based recording programs. Echo (also called "delay") is a popular microphone effect and can be heard on many professional recordings and during live performances. The most flexible method of adding echo is with an external hardware device, as it can be used in any instance when coupled with a sound mixer and PA system or computer.
Plug the microphone into the input of the echo device with a microphone cable.
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Insert a connection cable from the output of the echo device to the input of an audio source. An audio source would be a sound mixer and PA system, guitar or karaoke amplifier or a computer. Make certain that the termination plug of the connection cable matches the input terminal of the audio device.
Turn on the power to the audio and echo devices, and set the volume level on the audio device to normal operation level.
Turn the "Blend" or "Mix" control of the echo device up or down to mix the sounds of the "dry" (non-echo) signal with that of the "wet" (echo) signal.
Turn the "Feedback" control on the echo up or down to control the number of echoes.
Turn the "Delay" or "Time" control on the echo up or down to control the speed of the echo repeats.