Digital Audio Amplifier Purchase Guide?

Digital audio amplifiers utilize pulse-width modulation (PWM) to modulate audio signals, effectively amplifying them by varying the pulse width of high-frequency signals. They are popular for their small size and low power consumption and are important components of portable audio devices such as mobile phones and bluetooth speakers.

The following content will focus on the classification and application range of digital audio amplifiers, focusing on parameter specifications. Help users save time in purchasing and quickly determine their goals.

Classification of Digital Audio Amplifiers

As a beginner, you should first fully understand the basic classification of digital audio amplifiers before you start buying digital audio power amplifiers. This will help you quickly clarify your purchase goals.

Classification by Circuit Topology

Class D Digital Audio Amplifiers

They use high-speed switches (PWM or PDM) to achieve efficient power conversion. The efficiency can be as high as 90% or more, with low heat generation and compact design. They are primarily used in smart home devices, including home audio, Bluetooth speakers, TVs, and car amplifiers.

Class T Audio Amplifiers

It is an enhanced version of the Class D amplifier, equipped with digital signal processing (DSP) technology, and better sound quality. It is primarily used in high-fidelity compact audio systems that require high sound quality.

Hybrid Class D Audio Amplifier

Combines digital switching with analog or DSP input stages to balance the advantages of different amplification technologies, thereby providing high efficiency and specific sound quality. It is often used in musical instruments, smart speakers, smart home audio, etc.

Divided by Output Channel Configuration

Mono (1.0 channel) digital amplifiers are designed to drive subwoofers or mono audio applications.

Stereo (2.0 channel) digital amplifiers are suitable for music players, TV speakers, or desktop speaker devices.

Multi-channel digital amplifiers: Immersive audio is achieved through multiple speaker outputs for surround sound and home theater systems.

Clarify the Specifications of The Digital Audio Amplifier You Need

Understanding the basic classification of digital audio amplifiers will help you quickly narrow down your screening range. Next, you need to clarify the specifications of the amplifier you need: power output, signal-to-noise ratio (SNR), and total harmonic distortion (THD).

Power output: It is the key factor in driving speakers. The power output of the amplifier must be matched with the power capacity of the speaker.

Signal-to-Noise Ratio (SNR): It reflects the strength of the signal relative to the background noise, measured in decibels (dB). A higher SNR means a cleaner and more pleasant sound. An SNR of 90 dB or higher can achieve high-fidelity sound.

Total Harmonic Distortion (THD): The lower the THD, the closer the sound is to the original recording. To ensure the purity of the sound transmitted through the speaker, we must choose an amplifier with a THD value as low as 0.1% as possible.

The above content is a detailed introduction to the classification of digital audio amplifiers. I hope it can help you quickly lock in your target when purchasing an audio amplifier.

OFweek supplies a variety of audio amplifiers, each with a detailed DataSheet, and we look forward to your visit.

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