Hexahedron High-Fidelity

Hexahedron High-Fidelity, formerly known as Grammar Radio Xtra is an Robloxian internet-radio station owned by Hexahedron Media Networks.

The radio station launched on September 6, 2015.

Current

 * Fame or Shame
 * The Carmen Call
 * The DragonDipperBlossom Show (re-runs)