SKU: 5492580435

JL Audio RD400/4 : 4ch x 75W/100W Amplifier @ 4Ω/2Ω

Sale price$171.00 Regular price$190.00
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Ships within 48 hours · Estimated delivery Aug 21 - Aug 26

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Description

JL Audio RD400/4 : 4ch x 75W/100W Amplifier @ 4Ω/2ΩRD Series 75 Watts x 4 Channel Automotive Amplifier @ 4 Ohms. Utilizing JL Audio's 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. Dont 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%

RD-Series 75-Watts x 4-Channel Automotive Amplifier @ 4-Ohms.

Utilizing JL Audio's 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.

Specifications
  • Frequency Response
    12 Hz - 22 kHz (+0, -1dB)
    S/N Ratio, referred to highest rated power
    >104 dB below rated power (A-weighted, 20 Hz - 20 kHz noise bandwidth)
    S/N Ratio, referred to 1 W
    >84 dB (A-weighted, 20 Hz - 20 kHz noise bandwidth)
    Damping Factor @ 4 Ω
    >150 / 50 Hz
    Damping Factor @ 2 Ω
    >75 / 50 Hz
    THD+N @ Rated Power
    <1% @ 2 Ω per Ch.
    Input Voltage Range @ RCA Inputs
    Switchable from 200 mV - 2 V RMS (Low) to 800 mV - 8 V RMS (High)
    Min.Copper Power / Ground Wire Gauge
    4 AWG wire
    Fuse Rating
    40 A (AFS, AGU or MaxiFuse™)
Output Specifications
  • @ 4 Ω
    75 W RMS x 4
    @ 2 Ω
    100 W RMS x 4
    Bridged @ 4Ω
    200 W RMS x 2
Documentation
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 5492580435

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4.1 ★★★★★
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Nicolas D.
Lake Worth, US
★★★★★ 5
Small amount but great food product
Style: Beef Jerky, Flavor Name: Original + Teriyaki + Peppered, Size: 9 Ounce (Pack of 1)
I have bought MrBeast stuff, mostly for my kids, and was never disappointed in the flavor and quantity. This time, however, the bags are small. I should have read correctly, so it is my fault. In my head, Mr. Beast's stuff is usually a good amount with better ingredients for a reasonable price. This time, it was not a reasonable price for the amount you get. However, I would buy again for two reasons: #1 they taste great and feel more filling and lighter than other brands I normally eat, and #2 my wife can't stomach a lot of food, especially since she had her gallbladder removed. But with these sticks, she not only can eat them, but somehow she feels and looks more energetic. Maybe she is just getting a good source of protein that is harder for her to get when she can't stomach other protein foods.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 18, 2026
A
Verified Purchase
Alyssa Edwards
Grantham, US
★★★★★ 5
Great mixed box
Style: Beef Jerky, Flavor Name: Original + Teriyaki + Peppered, Size: 9 Ounce (Pack of 1)
The jerky is my favorite jerky I ever had and I really like the mixed box because you get alil bit of everything. The jerky sticks are flavored nicely but the actual jerky is so freaking good. The flavor is good but it's the texture i love. It's not too soft but also not too hard.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 10, 2026
C
Verified Purchase
CKY
Omaha, US
★★★★★ 3
Not a great value for the money
Style: Beef Jerky, Flavor Name: Original + Teriyaki + Peppered, Size: 9 Ounce (Pack of 1)
Very little product for the money.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 22, 2026
B
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Bhflynn84
Boise, US
★★★★★ 5
Great Flavor
Style: Beef Jerky, Flavor Name: Original + Teriyaki + Peppered, Size: 9 Ounce (Pack of 1)
Tastes great! My son loves them
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Reviewed in the United States on May 30, 2026
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Verified Purchase
Luis C.
Battle Creek, US
★★★★★ 4
Teriyaki is the best part
Style: Beef Jerky, Flavor Name: Original + Teriyaki + Peppered, Size: 9 Ounce (Pack of 1)
Jack links made well with Mr beast. Teriyaki flavor is amazing and peppered has a tang but overall pretty good
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Reviewed in the United States on February 1, 2026

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