AMP1X1 and AMP2X15 Amplifier Boards: Power Meets Precision

AMP1X1 and AMP2X1 Amplifier Boards: Power Meets Precision

In the ever-evolving field of audio engineering, achieving the right balance between fidelity, efficiency, and ease of integration is key. PUI Audio’s latest amplifier boards, the AMP1X1 and AMP2X1, are designed to offer audio engineers reliable, high-quality amplification in compact, easy-to-integrate packages. Let’s dive into what makes these amplifiers the choice components for anyone aiming to push audio quality to the next level.

AMP1X1: High-Fidelity Class AB Amplifier

Key Features

The AMP1X1 board is engineered for clarity and reliability, utilizing Analog Device’s MAX98309 Class AB amplifier to deliver uncompromised sound quality. This amplifier operates at 1.4W per channel into 8Ω loads and up to 2.1W per channel into 4Ω loads, powered by a 5V DC supply. By opting for Class AB, we’ve focused on maximizing signal fidelity—an advantage for applications where precise sound reproduction is non-negotiable.

Core Specifications:

• Power Output: 1.4W @ 8Ω, 2.1W @ 4Ω (1% THD+N)
• Dimensions: 25.4mm x 25.4mm compact form factor for versatile integration
• Power Supply Rejection Ratio (PSRR): A high 90dB for noise-free performance
• Signal-to-Noise Ratio (SNR): 110dB, ensuring clear audio with minimal background noise
• Header pins for easy design prototype development

Why Choose Class AB for the AMP1X1?

While Class D amplifiers are more power-efficient, Class AB amplifiers, like the MAX98309 in the AMP1X1, offer superior sound fidelity by approaching Class A performance levels. This makes the AMP1X1 ideal for applications where audio clarity and accuracy are crucial. Engineers can expect higher linearity, lower distortion, and smoother output transitions—all essential for creating immersive audio experiences.

AMP2X1: Efficient Class D Amplification

PUI Audio’s AMP2X1 audio amplifier board features Analog Device’s MAX9710 Class D stereo amplifier integrated circuit for maximum signal fidelity. This amplifier delivers 1.4W per channel into 8Ω loads and 2.6W per channel into 4Ω loads, both at 1% THD+N while using a 5V DC supply, making it suitable for audio setups requiring substantial volume and clarity without sacrificing efficiency.

Core Specifications:

• Power Output: 2.6W @ 4Ω (<1% THD+N), 1.4W @ 8Ω (<1% THD+N, 5V supply)
• Dimensions: 27.9mm x 38mm for versatile installation
• Power Supply Rejection Ratio (PSRR): A high 100dB for noise-free performance
• Signal-to-Noise Ratio (SNR): 95dB, ensuring clear audio with minimal background noise
• Header pins for easy design prototype development

Built-In Protections and BTL Configuration

With over-current and over-temperature protection, the AMP2X1 ensures durability and reliability under various operating conditions.The AMP2X1’s amplifier is designed to differentially drive loads connected between the OUT+ and OUT- pins. This is a bridge-tied-load (BTL). This configuration has advantages over a single-ended, ground referenced load.

Technical Highlights of PUI Audio Amplifiers

Crest Factor, THD+N, and SNR Explained

For those new to audio specifications:

• Crest Factor measures the peak signal level relative to its RMS value. Higher crest factors are typically indicative of dynamic audio content, beneficial for high-fidelity applications.
• Total Harmonic Distortion plus Noise (THD+N) indicates the amount of unwanted noise relative to the desired signal. Lower percentages signal cleaner audio reproduction.
• Signal-to-Noise Ratio (SNR) reflects the clarity of the output signal. Higher SNR values mean that your desired audio stands out against background noise.

Bridge-Tied Load (BTL) Advantage in AMP1X1

The AMP1X1 and AMP2X1 uses a Bridge-Tied Load (BTL) configuration, doubling the output voltage across the speaker load compared to a single-ended setup. This approach not only increases output power but also eliminates the need for high-value coupling capacitors, further enhancing low-frequency response and efficiency.

Conclusion: High-Quality Amplification for Every Audio Application

Both the AMP1X1 and AMP2X1 amplifier boards from PUI Audio provide tailored solutions for audio engineers, offering the right balance of power, efficiency, and sound quality. Whether your application demands the high fidelity of Class AB in the AMP1X1 or the maximum signal fidelity of Class D in the AMP2X1, PUI Audio delivers reliable, performance-driven options to enhance your audio designs.

Ready to learn more? Explore PUI Audio’s full lineup of amplifier boards and reach out to discuss your next project. Contact us through our form to start a conversation on how our audio solutions can meet your design needs.