These wireless systems are designed for wireless handheld microphone use. They include a high quality microphone for voice or instrument recording and a digital receiver to pick up the audio signal. The Samson model also features a clip-on microphone and beltpack transmitter suitable for interviews. These systems are useful for digital recording or amplification while minimizing the need for cables. The handheld microphone picks up the analog signal of a sound wave and converts it into a digital signal, which is sent to the audio receiver. The receiver can be connected to a recording device or amplifier; most receivers feature both balanced and unbalanced output options. For recording instruments wirelessly, a microphone stand can easily be attached for a hands-free experience.