RECOIL DI550.4 4-Channel Class-D Car Amplifier - 1,040W Max, 2-4Ω, Bridgeable

Powerful, efficient amplification for your car audio

Upgrade your ride with the RECOIL DI550.4, a compact 4-channel Class-D amplifier designed to balance performance and efficiency. Whether you’re upgrading component speakers or building a bridged two-channel setup for a sub, this unit provides a flexible platform that adapts to your existing system without taking up precious space in the dash or trunk.

Power and performance

The DI550.4 delivers substantial output across configurations, making it suitable for a wide range of car audio needs. In standard 2 Ω or 4 Ω configurations, you can expect solid, clean signal amplification across all channels, with a bridged option that enables higher two-channel power for subwoofers. The design emphasizes efficiency, allowing longer listening sessions with less heat buildup under typical driving conditions.

• 1040 watts max total power with precise channel assignments
• RMS ratings scale with impedance: around 130 W per channel at 2 Ω, or 80 W per channel at 4 Ω
• Bridged two-channel mode delivers higher subwoofer output for deeper bass
• Peak power supports short bursts for dynamic transients when needed

Versatility you can tune

Adjustability is at the heart of this amp. The DI550.4 offers a range of user controls to tailor the sound to your vehicle and music preferences, including gain, low-pass and high-pass filters, crossover routing, and a bass EQ. This level of control helps you craft clarity at high volumes or smooth warmth at lower levels, depending on your components and listening style.

• Gain, LPF, and HPF controls for precise frequency shaping
• Crossover options to route frequencies between channels
• Bass EQ to subtly sculpt low-end impact
• Bridge-ready architecture for flexible two-channel subwoofer pairing

Reliability in a compact chassis

Designed with a high-speed MOSFET power supply and premium internal components, the DI550.4 maintains performance while managing heat through efficient heatsinks. Four-way protection circuitry guards against common in-vehicle power and load conditions, helping the unit operate consistently across hours of use and varying driving environments. Its compact footprint, with a modest depth, makes it easier to fit behind seats or in tight mounting areas while still delivering robust power.

Dimensions: compact enough to fit in tight spaces while offering ample mounting flexibility. This combination makes the RECOIL DI550.4 a versatile choice for enthusiasts who want more control over their car audio without sacrificing space or reliability.

Real-world scenarios

• Upgrade a stock system with a dedicated 4-channel amp for improved front and rear channel clarity
• Bridge two channels to drive a subwoofer for enhanced low-end impact in a compact trunk
• Fine-tune sound with adjustable filters to reduce noise and optimize imaging in noisy cabin environments