The three channel output distribution amplifier uses 4558. The first stage is resistor coupled with a 33k.… Each output stage independently drives an amplifier through the 50 µF output capacitor to the 4k7 kΩ load resistor.

Audio Distribution Amplifier using 4558

4 channel audio splitter layout Audio Distribution Amplifier[

Audio Distribution Amplifier using 4558

4 channel audio splitter layout/ Audio Distribution Amplifier 4558

4 channel audio splitter layout

4 channel audio splitter layout