Digital Amps

[OttoMatic]

Biasing is the process of delivering feedback to the output stage.

No, it's not.

Most often, bias simply refers to a fixed DC voltage applied to the same point in a circuit as an AC signal, frequently to select the desired operating response of a semiconductor or other electronic component (forward or reverse bias). For example, a bias voltage is applied to a transistor in an electronic amplifier to allow the transistor to operate in a particular region of its transconductance curve; a (much higher) bias voltage is also often applied to the grid electrodes in a vacuum tube for precisely the same reason.

The processing and control of feedback is engineered into many electronic devices and may also be embedded in other technologies.

If the signal is inverted on its way round the control loop, the system is said to have negative feedback; otherwise, the feedback is said to be positive. Negative feedback is often deliberately introduced to increase the stability and accuracy of a system. This scheme can fail if the input changes faster than the system can respond to it. When this happens, the lag in arrival of the feedback signal results in positive feedback, causing the output to oscillate or hunt[5] Positive feedback is usually an unwanted consequence of system behaviour.

Feedback and bias are NOT the same thing.