The present disclosure provides a clip for securing a support channel in an acoustical ceiling mount and a building construction having a wall, flooring, or ceiling assembly that displays improved acoustic characteristics. The clip includes a body having a penetration-resistant base, a channel interface extending outwardly from a portion of the base configured to engage the support channel, and an opening in another portion of the base, a grommet engaged in the opening of the body, and an insert engaged in the grommet. The channel interface includes at least a first slot configured to receive a channel fastener to secure the support channel to the clip. The clip may be operatively coupled with a support channel and disposed in a building construction between the support channel and a finished interior element.