Mahanidhi Madan Gopal Das
Hari: The Supreme Lord Hari who destroys the three-fold afflictions (adhyātmika, adhidaivika and adhibhautika), and millions of sins from unlimited births of devotees who remember Him.
Kṛṣṇa: The word is made of two syllables: krs, which means all-attractive, and na, which means blissful. Kṛṣṇa is the fully blissful, all-attractive Supreme Lord of all.
Rama: The word Rama comes from ramante yogino anante, which means that yogis strive for eternal enjoyment by meditating on Him. Therefore, the Supreme Lord is known as Rama, the source of unlimited transcendental bliss.
An excerpt from the book Art of Chanting