Shift register "Non Oversampling Mode" for AD1861,AD1862,AD1865,PCM58,PCM61,PCM63,PCM1700,PCM1702,PCM1704. Board covered with gold and has +5v shunt regulator(motorolla zener diode+AD162(or AD155) telefunken  p-n-p germanium transistor). Input format:right-justified( sony format)MSB first.Output: 18,20,24 bit switch selectable. Only high quality vintage logic ICs which produced by fairchild and signetics!