[7][1][2][8][3][nb 1] The idea was to develop a compander system loosely emulating this process and to formally standardize on its characteristics.
[1][2][3] By emulating the typical characteristics of this compression,[2] UC compressed records would not produce acoustical artifacts which would not have been present in similar form on the produced disk anyway, and that thereby they would remain virtually unrecognizable,[1] so that consumption would remain acoustically pleasing and compatible even if records were later played back without UC expander.
[14] Finally, a UC expander[5] was built into the Ziphona HMK-PA2223,[6] a tangential arm direct drive turntable manufactured by VEB Phonotechnik Pirna/Zittau[6] in limited zero batch quantities only around 1989.
[19][20][21][22][23] The German reunification and the advances in digital home audio equipment put an end to the further introduction of the system in 1990.
[4] Given the revival of vinyl records, the re-introduction of UC and the development of corresponding compander hardware based on modern semiconductors has been considered several times around 1994/1995[4][24] and 2009/2010.