Description
ETON PA4 4-Channel Class-D Amplifier – Ultra-Compact with Asymmetrical Power
Don’t let the size fool you — the ETON PA4 delivers serious multi-channel performance in one of the smallest amplifier footprints available today. Built with Advanced Class-D technology and an intelligent asymmetrical power distribution, it offers flexible output that’s perfect for powering front-stage components, rear fill, or even a compact subwoofer system.
This smart 4-channel amp is wrapped in a premium gunmetal die-cast aluminium chassis and includes features typically reserved for much larger and more expensive units. Ideal for OEM integration and space-conscious installs.
Performance Overview
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CH1/2: 2 x 45W RMS @ 4Ω
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CH3/4: 2 x 80W RMS @ 4Ω
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CH3/4: 2 x 140W RMS @ 2Ω
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CH3/4: 1 x 280W RMS bridged @ 4Ω
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Signal-to-Noise Ratio: 78 dB
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Damping Factor @ 4Ω: >65
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THD+N: 0.01% @ 10W / 1kHz
Note: CH1/2 are not 2Ω stable and cannot be bridged. CH3/4 support 2Ω and bridged mode only.
Key Features
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Asymmetrical Output Design: Tailored to power a wide range of speaker configurations
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Ultra-Compact Size: 128 x 100 x 45 mm — fits behind dashboards, under seats, or in gloveboxes
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Full-Range Active Filters:
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High-Pass & Low-Pass adjustable from 50–5000 Hz on all channels
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OEM-Ready Integration:
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Auto Turn-On via Signal/Voltage (SIG / DC)
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Adjustable high-level input voltage (1–15V / 15–40V)
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Adjustable input resistance (10 / 150 / 600 Ω)
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Built-In Setup Tools: Removable top cover reveals an integrated tuning tool
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Modular Installation:
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Detachable connection plugs
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Variable mounting feet for flexible placement
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Designed for Modern Vehicles
The ETON PA4 is an installer’s dream. Whether you’re upgrading a factory system, building a clean SQ setup, or integrating into newer vehicles with tight spaces, this amp offers precision power without clutter. Use CH3/4 to drive a subwoofer and CH1/2 for mids/highs — all from one tiny amplifier.
