This paper introduces the characteristics of digital audio power amplifiers in detail, and compares the analog and digital power amplifiers.
This document introduces the evolution of audio power amplifiers from analog tube and transistor designs to modern digital (D‑class) solutions. It explains the basic operation of digital amplifiers, including PWM modulation, 1‑bit architectures, and the advantages such as high efficiency and low latency.
The text also provides technical comparisons between analog and digital amplifiers, lists performance specifications of various PowerSoft D‑series and DIGAM series models, and discusses typical applications in professional and consumer audio systems. This manual is written in Chinese.
| Power conversion efficiency | ≥90 % |
|---|---|
| Frequency response (1 W, 8 Ω) | 5 Hz–30 kHz |
| Signal‑to‑noise ratio | ≥105 dB (A) |
| Minimum load impedance | 1 Ω |
| Maximum output power (bridge mode, 4 Ω) | 5000 W |
Digital audio power amplifiers can achieve a power conversion efficiency of 90 % or higher.
They can operate with a load impedance as low as 1 Ω.
The D‑series provides a frequency response from 5 Hz to 30 kHz.
They reach a signal‑to‑noise ratio of at least 105 dB (A).