ISE 2020: Gallo Acoustics Shows Off Waterproof Series of Spherical Loudspeakers February 17, 2020 | Home / February 17, 2020 rave-video / ISE 2020: Gallo Acoustics Shows Off Waterproof Series of Spherical Loudspeakers Look in: ISE ISE 2020: Gallo Acoustics Shows Off Waterproof Series of Spherical Loudspeakers