We don't want the guest distracted by background noise drowning out the vows. Sound is important, particularly the wedding ceremony in outdoor location. And we don't know the wedding ceremony sound system layout or which microphones will be use. To ensure that audio is comfortable in final product. We handled three lavalier microphone to officiant, groom and bride, (the other one plug-in to PA System if allowed) absorbing every detail of the wedding venue. Our goal is make the wedding ceremony comes complete with sound and vision.