Dual Op Amp Bridge Audio Amplifier is analyzed and explained in this video. How does Bridge Audio Amplifier work? How to compute the gain of audio amplifier? and what are the proper choices of the circuit components? These questions are answered in this 204th video in my analog circuit design playlist on YouTube. This circuit is designed with two operational amplifiers and a signal DC voltage supply to deliver few hundred watts power to an audio speaker. A quick DC analysis is provided in this video to show how positive and negative DC supplies are provided to both Op Amps using single voltage supply. Then the lower end of frequency response is analyzed and is shown that is defined by the series RC resistor-capacitor in the circuit. The values of the resistor and capacitor are then selected to support audio amplification above 30Hz. Then the amplifier gain is computed using KVL (Kirchhoff Voltage Law) and op amp virtual short and negative feedback. It is shown that the gain of this bridge audio amplifier is 1+2R2/R1.