Peak Amplification Launches 500W Heatsink-Free GaN Module for Audio Systems

Peak Amplification, a division of Elytone Electronic Co., Ltd., today introduced the AM-500C1G, its flagship GaN-based single-channel audio amplifier module. Engineered to maximize power density and audio fidelity, the AM-500C1G delivers more than double the power output of the AM-200C1G without requiring bulky external heatsinks.

Designed for manufacturers developing top-tier audio systems that demand high power output and uncompromising thermal efficiency, the AM-500C1G integrates seamlessly into professional audio, high-end consumer Hi-Fi, commercial AV, and active loudspeaker designs.

High Power Density. Audiophile Precision.

At the core of the AM-500C1G is Infineon’s CoolGaN™ power transistor (IGC090S18S1) integrated with the IRS20957S Class-D controller IC. Paired with a half-bridge self-oscillating topology and external clock synchronization, the module achieves an ultra-low total harmonic distortion of 0.0007% THD (@ 10W, 4Ω, 1kHz), an extremely low output impedance of 6mΩ, and a noise floor of just 40μV (A-weighted)—delivering 1/20th the distortion and half the noise of conventional MOSFET-based Class-D amplifiers.

Operating at up to 94% efficiency (200 W – 500 W @ 4 Ω), the single-channel AM-500C1G generates minimal heat and scales up to 500W @ 4Ω (300W @ 2Ω, 250W @ 8Ω) without a heatsink. Its compact footprint—measuring L115.0 × W30.0 × H29.0 mm and weighing just 65g—is optimized for vertical carrier board placement, allowing system designers and engineering teams to increase multi-channel density in tight chassis spaces without thermal throttling or complex cooling setups.

Key Features:

• High Output Power (Heatsink-Free): Scalable up to 500W × 1 @ 4Ω (300W @ 2Ω, 250W @ 8Ω).
• Powered by Infineon CoolGaN™: Built with premium Infineon IGC090S18S1 GaN transistors and the IRS20957S controller IC architecture for maximum switching efficiency.
• Ultra-Low Distortion & Noise: 0.0007% THD (@ 1W, 4Ω, 1kHz), 6mΩ output impedance, and 40μV noise floor (A-weighted)—delivering 1/20th the THD and 50% lower noise compared to traditional MOSFET-based Class-D amplifiers.
• Compact Vertical Design: L115.0 × W30.0 × H29.0 mm footprint (65g) built for vertical mounting and high-density channel scaling.
• Flexible System Integration: Supports broad impedance matching (2Ω – 8Ω), bridgeable operation, and external clock sync.
• Thermal & System Protection: Integrated Over-Current Protection (OCP) and Over-Temperature Protection (OTP).

Executive Commentary

“With the AM-500C1G, we are proving that high power output doesn't require extra size or thermal complexity,” said Albert Yong, CTO of Audio/OEM at Elytone. “By pairing Infineon's CoolGaN™ technology with our vertical module architecture, we have reduced THD to 1/20th and cut the noise floor in half compared to traditional MOSFET-based Class-D designs—all while delivering 500W of audiophile-grade power without a heatsink.”

Availability & OEM Evaluation

The AM-500C1G is now available for engineering evaluation, sample requests, and custom carrier board integration. Product development teams and OEMs can request evaluation kits directly from our team. To view technical specs, download datasheets, or schedule an engineering consultation, visit Peak Amplification or contact us directly.

About Peak Amplification

Peak Amplification develops turnkey audio amplifier modules focused on efficiency, thermal optimization, and system-level flexibility. Working closely with Elytone and semiconductor partners, we empower audio customers to innovate and bring high-performance products to market quickly.