The phrase "are to one's ears in" is often used to describe pleasing or soothing sounds. Antonyms for this phrase could include "displeasing," "irritating," or "jarring." Unpleasant sounds, such as screeching, banging, or discordant notes, could be described as the opposite of "are to one's ears in." It is important to note that what one person finds pleasing may be completely different from what another person finds pleasing. Therefore, the antonyms for "are to one's ears in" can be subjective and vary based on personal preferences.