This circuit is from 80's documentation. Operational equivalents can be used. The power source is 5 V TTL.
Found in American documentation from 1968 this circuit is based on discrete components in addition...
This preamplifier with RIAA equalization was obtained in a documentation from the 1980s. The...
This oscillator with the PLL 4046B was obtained from a 90s Radio Electronics. The circuit...