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Jyutping gwan1 hang4 hei3
Pinyin jūn héng qì

Definitions (Wiktionary)
  1. noun
    equalizer (device for altering audio frequencies)

均衡器 [---]

Jyutping
Pinyin jūn héng qì

Definitions (CC-CEDICT)
  1. equalizer (electronics, audio)