Digital Amplifiers

Martin Audio D4 Four Channels Power Amplifier

How Do Digital Amplifiers Work?

Digital amplifiers, also known as Class D amplifiers, operate by converting an analog input signal into a digital format that uses pulse-width modulation (PWM) or pulse-density modulation (PDM). This digital signal drives the output transistors, which rapidly switch on and off, feeding pulses of power to the speakers. A digital amplifier’s power stage efficiently amplifies these pulses and an in-built low-pass filter removes any high-frequency switching noise, leaving considerably amplified audio signals for our enjoyment.

Pros of Digital Amplifiers

Higher Efficiency: Digital amplifiers typically achieve efficiencies exceeding 90%, which means less power is wasted as heat and more is used for amplification.

Smaller Size: Because they generate less heat, digital amplifiers require smaller heat sinks. This compact design is ideal for space-conscious consumers and integrates seamlessly into home audio setups from Design Lab.

Lightweight: The reduced need for large power supplies and heavy cooling systems makes digital amplifiers incredibly light, enhancing their portability.

Lower Power Consumption: With the increased efficiency, digital amplifiers need less electricity to operate, which can lead to energy savings over time.

Consistency in Sound Quality: Regardless of the volume level, digital amplifiers continually provide a consistent sound without distortion.

Cost: High-quality digital amplifiers are often more expensive initially but investing in one from Design Lab ensures a product that’s worth every penny in terms of longevity and performance.