Elevate Your Audio Experience

Discover the power of sound with the JL audio RD400/4 4 Channel Class D Full-Range Amplifier. This high-performance amplifier is engineered to maximize your car audio system's potential. With a robust 400 W output, it delivers clear and powerful sound across all frequencies.

Innovative Class D Technology

The JL audio RD400/4 4 Channel Class D Full-Range Amplifier utilizes advanced Class D technology. This ensures efficient power consumption and minimal heat generation. You get a reliable and consistent audio performance during your entire drive.

Versatile Connections

Perfect for any audio enthusiast, this amplifier offers multiple connectivity options. It can seamlessly fit into your existing system, whether for a complete rebuild or an upgrade. The JL audio RD400/4 4 Channel Class D Full-Range Amplifier is the key to unlocking studio-quality sound.

Precision and Control

With intuitive controls, you can fine-tune your audio settings with ease. Experience the freedom to adjust sound levels to your preference. This perfect blend of precision and power sets it apart from ordinary amplifiers.

Built to Last

Durability meets design with the JL audio RD400/4 4 Channel Class D Full-Range Amplifier. Crafted with high-quality materials, it withstands the demands of any driving environment. It's more than just an amplifier; it's a lasting investment in incredible sound.

Available at Garage Audio

At Garage Audio, we specialize in top-of-the-line car audio systems. The JL audio RD400/4 4 Channel Class D Full-Range Amplifier is a testament to our commitment to quality. Upgrade your vehicle's sound system today and experience music like never before. Your car audio journey starts here, with unmatched clarity and power.

Channels 4
Physical dimensions (Height) 2.13" (54 mm)
Physical dimensions (Depth) 6.96" (177 mm)
Warranty 2 years
Audio
Amplifier class Class D
Rated continuous (RMS) power (14.4 V input @ 4 Ohm < 1% THD)
75 W x 4/200 x 2 (Bridged)

Rated continuous (RMS) power (14.4 V input @ 2 Ohm < 1% THD)
100 W x 4

Rated continuous (RMS) power (12.5 V input @ 4 Ohm < 1% THD)
60 W x 4/180 x 2 (Bridged)

Rated continuous (RMS) power (12.5 V input @ 2 Ohm < 1% THD)
90 W x 4

Signal-to-Noise Ratio, referred to highest rated power (A-weighted, 20 Hz - 20 kHz noise bandwidth): Analog Inputs >104 dB
Signal-to-Noise Ratio, referred to 1 W (A-weighted, 20 Hz - 20 kHz noise bandwidth): Analog Inputs >84 dB
Damping factor @ 4 Ω >150/50 Hz
Damping factor @ 2 Ω >75/50 Hz
Frequency response (+0, -1dB) 12 Hz-22 kHz
Input voltage range @ RCA inputs Switchable from 200 mV-2 V RMS (Low) to 800 mV-8 V RMS (High)
Fuse rating 40 A
Recommended fuse type(s) AFS, AGU or MaxiFuse™
Min. copper power/Ground wire gauge 4 AWG wire
Signal Processing
Filter mode(s): Channels 1 & 2 Low-pass or High-pass
Filter Slope(s): Channels 1 & 2 12 dB/octave
Filter frequency range: Channels 1 & 2 50 Hz-500 Hz
Filter mode(s): Subwoofer Channel Low-pass or High-pass
Filter slope(s): Subwoofer Channel 12 dB/octave
Filter frequency range: Subwoofer Channel 50 Hz-500 Hz