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JL Audio RD400/4, RD Series Class D Full Range 4-Ch Amplifier, 400W

SKU: JL-RD400/4 UPC: 699440986212
Out of stock
Regular price $379.99
Buy Now to Receive Between - (Order within 00h 00m)

Utilizing our exclusive NexD™ high-speed switching technologies, the ultra-compact RD400/4 amplifier is engineered to deliver loads of audio output power, with incredible efficiency and low distortion. Don’t let its modern styling and small size fool you though, this little powerhouse churns out 100 watts of crystal-clear audio from each of its four channels into 2 ohms (14.4V, 1% THD) and is fully bridgeable, so it can be used as a 3-channel amplifier, or as a 2-channel amplifier producing a whopping 200W x 2 into 4 ohms.

For your convenience, the RD400/4’s controls can be found on top of the amplifier, beneath a protective cover, with all connections located along one side of its chassis. Studio-grade signal processing features include high or low-pass 12 dB / octave filters (defeatable) for each channel pair, with continuously variable frequency selection from 50-500 Hz, and dual-range, differential-balanced inputs capable of accepting most input voltage levels. Automatic turn-on capability (via signal sensing or DC-offset sensing) is standard equipment, along with all-new input type switches for bridging of stereo output channels without needing to use Y-adaptors.

Onboard LED-clipping indicators are also included with your RD400/4. This all-new, innovative feature lets you easily set your amplifier’s input sensitivity settings, quickly and accurately, with no special equipment needed. You’ll also find a set of preamp outputs on-hand, so you can pass signals to another amplifier, almost effortlessly. The RD400/4 features a durable, black powder-coated finish and a top-mounted, dual-color LED light strip that reports the overall status and condition.

NexD™ Switching Technology

NexD™ amplifier technologies produce exceptional audio quality, unsurpassed total efficiency and high power from very compact amplifier designs.

Differential-Balanced Inputs

JL Audio’s Differential-Balanced Inputs are engineered to combat induced cable noise, which is a common problem in car and marine audio installations. This technology allows for the use of conventional RCA cables, while delivering many of the benefits of a true balanced connection and accepting a wide range of input signal levels.

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Number of Channels

4

Class

D

Peak Power Rating (Watts)


RMS Power Rating (Watts x Channels) - 4 Ohms

75 x 4

RMS Power Rating (Watts x Channels) - 2 Ohms

100 x 4

RMS Power Rating (Watts x Channels) - 1 Ohm

N/A

RMS Power Rating - Bridged 200 x 4
Minimum Impedance Unbridged (Ohms)

2

Minimum Impedance Bridged (Ohms)

4

THD at Rated RMS Power

1%

Bulit-in Crossover - Low Pass

Yes

Built-in Crossover - High Pass
Yes
High Pass Crossover Frequency (Hz)

50-500hz

Low Pass Crossover Frequency (Hz)
50-500hz
Signal-to-Noise Ratio

84dB

Bass Boost
No
Bass Remote Included

No

Fuse Rating 40A
CEA-2006 Compliant Yes
Maximum Power Wire Gauge Size 4 Gauge
Warranty 1 Year

Number of Channels

4

Class

D

Peak Power Rating (Watts)


RMS Power Rating (Watts x Channels) - 4 Ohms

75 x 4

RMS Power Rating (Watts x Channels) - 2 Ohms

100 x 4

RMS Power Rating (Watts x Channels) - 1 Ohm

N/A

RMS Power Rating - Bridged 200 x 4
Minimum Impedance Unbridged (Ohms)

2

Minimum Impedance Bridged (Ohms)

4

THD at Rated RMS Power

1%

Bulit-in Crossover - Low Pass

Yes

Built-in Crossover - High Pass
Yes
High Pass Crossover Frequency (Hz)

50-500hz

Low Pass Crossover Frequency (Hz)
50-500hz
Signal-to-Noise Ratio

84dB

Bass Boost
No
Bass Remote Included

No

Fuse Rating 40A
CEA-2006 Compliant Yes
Maximum Power Wire Gauge Size 4 Gauge
Warranty 1 Year

WARNING: This product can expose you to chemicals including arsenic, which is known to the State of California to cause cancer. For more information, go to