Technical Review of Class TD Audio Power Amplifiers

This paper presents an extensive evaluation of power amplifier classes by analyzing Class TD amplifiers alongside standard classes $\mathrm{A}, \mathrm{B}, \text{AB}, \mathrm{D}$ and $\mathrm{G} / \mathrm{H}$. Class TD amplifiers serve high-power applications because they deliver efficient and high-performance audio amplification. The design of these amplifiers supports high power output together with excellent fidelity characteristics which makes them appropriate for professional sound reinforcement, large-scale public address systems and high-power studio monitoring applications. Class TD amplifiers combine $\mathbf{A B}$ class audio quality with class $\mathbf{D}$ power efficiency through their design to deliver strong performance without major heat dissipation. The initial section presents a basic outline of audio power amplifier configurations. A thorough explanation follows about Class TD amplifier operation principles together with their distinctions from other amplifier classes. The research evaluates essential performance metrics through a comparative study of efficiency, total harmonic distortion, linearity, complexity, cost, output power, energy consumption, signal-to-noise ratio and frequency response. The evaluation assesses both benefits and drawbacks of Class TD amplifiers when used in high-power applications. The paper finishes by discussing general findings about Class TD audio power amplifiers for high-power applications and their potential future development.