This interesting circuit for the RDA8851 allows you to obtain two volumes with a simple touch. The circuit is from an Electronics Now from December 1988. Note the amplifier voltages.
This driver for audio signals using the TAA435 integrated circuit was found in Philips 1968...
This circuit was published in an article in Electronics Now magazine in October 1995. The circuit...
The configuration shown in the figure is one of the most traditional when it is desired to produce...