Pioneer GM-D1004 Class FD 400W Max Power 4-Channel Digital Compact Amplifier

The Pioneer GM-D1004 is a compact and versatile 4-channel car amplifier designed to significantly upgrade your in-car audio experience. Despite its small footprint, often compared to the size of a standard red brick, this Class FD amplifier delivers powerful performance, providing 45 watts RMS x 4 channels at 2 or 4 ohms, or 90 watts RMS x 2 channels when bridged at 4 ohms. This is a substantial improvement over typical factory or aftermarket receivers, offering cleaner audio, deeper bass, and reduced distortion.

Its efficient Class FD design ensures high-quality sound without generating excessive heat, allowing for flexible installation options, even in tight spaces like behind the dashboard or in the glove compartment. The GM-D1004 features universal harnesses for both RCA outputs and speaker-level wiring, simplifying installation. It also includes switchable front and rear high- and low-pass filters (80 Hz, 12 dB/octave) for precise audio control, enabling optimal performance for various speaker configurations, including driving a subwoofer.