Q10U1A1D2R1A1P3H4O1N1I1C3
29 points
QUADRAPHONIC is validvalid
having four audio channels
of, relating to, or using four channels for the transmission, recording, or reproduction of sound, also QUADRIPHONIC, QUADROPHONIC
having four audio channels
of, relating to, or using four channels for the transmission, recording, or reproduction of sound, also QUADRIPHONIC, QUADROPHONIC