Martin Audio D4 Four Channels Power Amplifier

Martin Audio D4 Four Channels Power Amplifier

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.