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Calix Inc. is a high-end audio equipment manufacturer specializing in speakers, particularly known for their flagship Phoenix Grand Signature (PGS) loudspeaker. The company was founded by Taiwan-based team headed by principal designer K.E. Lee and president Liu Sun, both audio industry veterans. Their speakers feature neo-art deco design conceived by Japanese artist Minol Araki, combining unique aesthetics with high-end audio performance. The Phoenix Grand Signature is described as a super-speaker with controlled dispersion horn loading design, though with average sensitivity of 88dB/W/m rather than typical high-efficiency horn speakers.