Block Diagram Of Amplifier System. 2 5w 2 stereo amplifier. Special techniques are used to provide the high input impedance necessary for the operational amplifier.

The input stage is a differential amplifier. The symbol gives no detail of the type of amplifier described but the direction of signal flow can be assumed as flowing from left to right of the diagram. If we directly fed this signal to the speaker it will not be in a position to drive the speaker.

The symbol gives no detail of the type of amplifier described but the direction of signal flow can be assumed as flowing from left to right of the diagram.

You can also make a 5w mono amplifier out of it. Amplifiers of different types are also often described in system or block diagrams by name. This could be broken down into the blocks like the audio amplifier system. If we directly fed this signal to the speaker it will not be in a position to drive the speaker.