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