AM6403 8-Channel Power Amplifier

Features

● Comprehensive Protection: Short circuit, overload, overcurrent, DC, soft start, fuse, and transformer overheat protection.
● Intelligent Constant Power Control: Automatically limits output when load is below rated range for stable and reliable operation.
● Resonant Soft Switching (ZVS): Eliminates switching spikes (di/dt) for improved efficiency and reduced interference.
● Advanced Class H Design: Up to 93% efficiency with stable 4Ω load driving and Hi-Fi level audio performance.
● Dual-Loop Resonant Power Supply: Reduces power interference and ensures cleaner waveforms with smoother sound quality.
● Premium Components: Matched transistors, low-noise ICs, and precision components for accurate and refined sound reproduction.
● Efficient Heat Dissipation: High-density copper heat sinks with intelligent temperature control for enhanced stability.
● Smart Thermal Protection: Automatic temperature compensation maintains safe operation under all conditions.

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Introduction
Specification

The AM6403 is a compact and lightweight power amplifier designed for high-end home theaters and fixed installation applications. It can also be configured to match various load impedances, allowing flexible and personalized system setups with different speaker models and application scenarios.

The AM6403 adopts a newly designed power supply solution optimized for reduced weight and size. Combined with an efficient cooling system featuring patented heat dissipation technology, the amplifier is 40% lighter than traditional amplifiers with comparable power.

It also features a distinctive and refreshing industrial design, with the entire front panel presenting a three-dimensional structural form that creates a strong sense of depth and visual dynamism, making it ideal for private clubs, karaoke lounges (KTV), and similar entertainment spaces.

Brochure---KUEEN-SERIES-7.2-Channel-Surround-Sound-Home-Theater-Karaoke-System-1.jpg

Model	AM6403
Rated Power (RMS 8Ω)	7×400W + 800W
Rated Power (RMS 4Ω)	7×600W + 1200W
Freuqency Response	20Hz-20kHz（±0.5dB）
Output Circuit	Class H
THR	≤0.05%@8Ω 1KHz
SNR	≥105dB
Slew Rate	40V/μs
Dampling Factor	>550
Channel Separation	>100dB@8Ω 1KHz
Input Sensitivity	0.775V / 1.44V
Input Impedance	20kΩ (Balanced) / 10kΩ (Unbalanced)
Protection Function	DC, Short Circuit, Overheat, Soft Start
Front Panel Controls	AC Power Switch; Power (Blue), Signal (Green), Protect (Red) Indicators
Product Volume	0.05m³
Chassis Height	2U
Product Dimension (W×D×H)	483mm×460mm×88mm
Package Dimension (W×D×H)	585mm×565mm×145mm
Net Weight	21.5kg
Gross Weight	23.0kg

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