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Description
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Features
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Power meets precision in the Soundstream PSA5.4000D — a rugged, compact, and waterproof 5-channel amplifier built to dominate in any environment. Whether you're cruising the highway, conquering trails, or cutting through open waters, this amp is engineered for reliable high-output performance across all powersport, marine, and motorcycle applications.
Delivering a massive 4,000 watts of max power, the PSA5.4000D features full-range Class D circuitry and supports 2-ohm stereo and 1-ohm mono configurations for maximum flexibility. It powers four channels of mids/highs plus a dedicated subwoofer channel, making it the ideal all-in-one amplifier for complete system builds.
With IP66 waterproof protection, a military-grade PCB, and a PWM MOSFET power supply, the PSA5.4000D is built to withstand the harshest elements. Fine-tune your sound with variable crossovers, subsonic filter, bass boost, and high/low-pass filters to achieve clean, controlled output from lows to highs.
Max Power Output: 4,000W
RMS @ 4Ω: 100W x 4
RMS @ 2Ω: 150W x 4 + 450W x 1
RMS @ 1Ω (Sub): 650W x 1
5-Channel Design – Ideal for Full-System Setups
IP66 Waterproof Chassis for Extreme Marine & Off-Road Conditions
2-Ohm Stereo & 4-Ohm Bridged Full-Range Operation
Military-Grade PCB with PWM MOSFET Power Supply
Direct Short, Thermal, & Overload Protection
RCA Low-Level Inputs: 200mV – 8V
Variable 12dB HPF & LPF (50Hz–500Hz)
Variable Subsonic Filter: 10Hz–50Hz
Variable Low Pass (Sub): 40Hz–250Hz
Variable Bass Boost: 0–12dB
8-Gauge Power/Ground Terminals – 12-Gauge Speaker Outputs
THD: <0.05% – Frequency Response: 20Hz–20kHz – S/N Ratio: 90dB
Dimensions: 5.25" (W) x 2" (H) x 12.25" (L)
