The Amplifier is the ideal companion for all the others, because it amplifies their action. It releases streams of energy from the environment or from any objects or organisms that come into contact with it.
 
"The Amplifier is the perfect companion for everyone else, because it amplifies their action. Placed near another Instrument, it amplifies its energy. It can also stand on its own. It energizes and potentiates all foods, food supplements, drinks, etc. near which it is placed. Placed near the minerals, it amplifies their radiation. Used in energy sessions, it helps to dissolve tense energies, and emits a great power of regeneration and restructuring. It releases streams of energy from the environment or from any objects or organisms that come into contact with it." ~ The guardians of the Flame, 14-1-11