Cezar Quadro Receiver DKS-201

The Cezar Quadro DKS-201 16001 is the first and only Polish quadrophonic transistor radio receiver. It was manufactured in 1976 (the year it was also presented at the Poznań International Fair) and marketed during the following year. The quadraphonic system is the first ever commercial multi-channel sound system, and was developed in the 1970s. According to the assumptions of its designers, for sound transmission it uses “four acoustic paths terminated for playback with four speakers, two of them placed in front of the listener, and two behind. Such a placement of speakers allows echo effects to be reproduced. Two-channel stereophony does not afford such possibility”. In this way, "quadraphony – or four channel stereophony – allows reproduction of sounds in a three-dimensional space, i.e., in a full, undistorted way”. Manufacturer: Zakłady Radiowe Unitra Diora, 1976-1977 Inv. no.: MIM1610/V-360 Model prepared on the basis of photogrammetric measurements Licence: CC BY-NC-SA