Tc Helicon Harmony G ReviewsTc Helicon Harmony G Xt User Manual InstructionsTc Helicon Harmony G Xt ManualeThe VoiceTone Harmony-G XT (for 'extended') summarizes the main features of the Harmony-G, but with the addition of features derived directly from the flagship of the fleet TC Helicon, namely, the VoiceLive 2. TC-Helicon VoiceTone Harmony-G XT Manual. User guide. Download PDF for free and w..