His Master's Voice.

"His Master's Voice" is best known not as a literary aphorism but as the title/caption associated with the famous trademark image of a dog (Nipper) listening to a gramophone. The phrase became widely recognizable through the branding of The Gramophone Company and later the Victor Talking Machine Company (and affiliated labels such as HMV), especially in the early 20th century as recorded sound entered mass consumer culture. In everyday usage it also developed a figurative sense—often pejorative—meaning someone who merely repeats an authority’s opinions, like a compliant spokesperson.

Literally, the phrase evokes fidelity and recognition: a devoted listener responding to a familiar, authoritative voice. Because it was popularized by a trademark depicting a dog attending to a recorded voice, it also carries modern themes of mediation and reproduction—voice detached from the body yet still commanding attention. Idiomatically, "his master’s voice" can imply uncritical obedience: a person who echoes a superior’s views rather than speaking independently. The tension between loyalty and servility is what gives the phrase its lasting rhetorical bite.