The TAA300 integrated circuit is not common today. In fact, the circuit shown is from a Dutch Philips documentation from 1969. The output is 8 ohm speaker and 9 V power supply.
The 4046 consists in a PLL with na internal oscillator controlled by voltage (VCO). Figure bellow...
This circuit was found in a 1980s documentation but can be easily assembled even today by the...
The TBA810 integrated circuit used in this 1982 project is not very common today, but if found it...