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JL Audio

JL Audio RD400/4 4-Channel Car Amplifier — 75W RMS x 4

$528.00
$629.99
16% Off
SKU: RD400/4
UPC: 699440986212
Condition: New
Availability: Usually Ships in 1-2 Days
Shipping: Calculated at Checkout
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Free shipping on orders over $200
30-Day Return Policy
Canadian Owned & Operated
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Descriptions

About: JL Audio RD400/4 4-Channel Car Amplifier — 75W RMS x 4

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.

Features:  

  • 4-channel car amplifier
  • 75 watts RMS x 4 at 4 ohms (100 watts RMS x 4 at 2 ohms)
  • 200 watts RMS x 2 bridged at 4 ohms (4-ohm stable in bridged mode)
  • Class D amplifier design with NextD™ switching amp technology
  • Differential-balanced inputs help eliminate noise
  • Variable low- and high-pass filters (50-500 Hz, 12 dB/octave)
  • LED clip lights help set gain
  • Blue LED accent lighting
  • Preamp inputs and outputs
  • Speaker-level inputs (speaker wire to RCA adapter required)
  • Dimensions (W x H x D): 9.78" x 2.13" x 6.96" (248 x 54 x 177)    

Specifications:

  • Rated Continuous (RMS) Power @ 14.4 V:
    • @ 4 Ω 75 W RMS x 4
    • @ 2 Ω 100 W RMS x 4
    • Bridged @ 4Ω 200 W RMS x 2 
  • Rated Continuous (RMS) Power @ 12.5 V: 
    • @ 4 Ω 60 W RMS x 4
    • @ 2 Ω 90 W RMS x 4
    • Bridged @ 4Ω 180 W RMS x 2 
  • 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™)

Signal Processing:

  • Filter Mode(s): Low-Pass or High-Pass
  • Filter Slope(s): 12 dB/octave
  • Filter Frequency Range: 50 Hz - 500 Hz
  • Detented, Calibrated Filter Freq. Potentiometers: No
  • Filter Defeat Function: Yes
  • Remote Level Control: No
  • Remote Level Modes: N/A
  • Channel Input Mode Switch: Yes (2/4 ch.)
  • Pass-Through Preamp Output: Buffered
  • Source Channel Selection for PreOuts: No

What's in the Box: 

  • 4-Channel amplifier
  • 2.5mm Allen wrench
  • Self-adhesive JL Audio badge
  • Owner's manual

Most products include a limited one year manufacturer’s warranty covering defects in materials and workmanship under normal use. Warranty coverage does not apply to improper installation, misuse, or damage caused by operation outside manufacturer specifications. For complete warranty terms, exclusions, and claim procedures, please visit our full Warranty Policy page.

Shipping Policy

Please allow 1-2 business days to process an order for in-stock items. Special order/non-stocking items will take longer to process and should be noted on the product page under availability. However, if there are any extended time frames, our team will notify you via phone or email to let you know about any delays or issues. Shipping times are only estimates and are not guaranteed.

We can ship to virtually any address in the world. However, there are some restrictions on select brands and products that cannot be shipped to international destinations. Free shipping is applicable within Canada on orders over $200 before taxes, excluding any heavy items with a fixed shipping fee. Singh Electronics has the right to charge or re-evaluate a shipping rate even after a purchase has been made. For U.S and international orders, a shipping fee will be applicable and calculated based on your location and the dimensions of the item(s). For international orders outside of North America, please email our team at contactus@singhelectronics.ca with the quantity, brand, model number, and your full shipping address including the zip code for a shipping estimate.

If a package is refused or marked undeliverable and returned back to the sender by the shipping carrier, the buyer will be responsible for the return shipping charges and any re-shipping charges. If a refund is approved, we will minus the full cost of the shipping. 

Return Policy 

We at Singh Electronics offer up to 30 days from the day of delivery or pickup for a return. To be eligible for a return, the item(s) must be in the original packaging, unused, and in the same condition that you received it. If you need to process a return, please submit a return request online or email our team at contactus@singhelectronics.ca. Please include your order number, the reason for the return, and any details about the product you would like to return. 

Our team will respond promptly with instructions on how to return the item(s) from your order and issue an RMA (Return Material Authorization) number. Once the RMA number has been issued you have up to 30 days to ensure the product is delivered to the provided return address. Upon receiving the item(s), please allow 7-14 business days for our team to process the return.  

Any returns/exchanges after 30 days of delivery will not be accepted. Returned product(s) without an approved RMA (Return Material Authorization) number will not be processed and/or refused. Return shipping and handling costs are the buyer's obligation unless a processing error has occurred. Legal action will be taken if the buyer refuses to take responsibility for these charges along with the cost of any legal expenses that occur.  

Product(s) that have been installed, used, or opened cannot be returned or exchanged unless approved by the seller. If approval is granted a restocking fee of up to 40% is applicable. 

Please note any special order item(s), which are specified on the product page under availability are subject to a 10% restocking fee on the exchange and a return will not be applicable unless approved by the seller. Any special orders where our team has reached out to confirm extended time frames that are agreed upon by the customer, can not be canceled. 

For any unidentified return or lack of response that is aged over 14 days, Singh Electronics will have the right to dispose of such items without notifying the buyer. No replacement will be issued on the unidentified return once it has been disposed of. For your in-store purchase(s) return policy, please refer to your receipt provided at time of sale.

Exempt products/brands

The following brands are exempt from any returns and are considered final sale items: 

Brands such as 18 Sound, 7Driver Audio, Alphasonik, American Bass, Autotek, Avatar, B2 Audio, Banda, Blastking, Cerwin Vega, Crescendo Audio, Crunch, CT Sounds, DD Audio, Deaf Bonce, DS18, Eros Alto-Falante, Expert Electronics, Fi Audio, Hifonics,  Incriminator, JY Power, Limitless Lithium, Odyssey, Orion, Pride Audio, PRV Audio, Resilient Sounds, Skar Audio, Sky High Car Audio, Soundstream, Stetsom, Sundown Audio, Taramp’s, Timpano, VFL Audio and XS Power are exempt from any returns

Special Return Periods

Purchases made between Nov. 1 and Dec. 31 are eligible for extended returns until Jan. 31 of the following year provided it is noted as a gift at the time of purchase.

Lost/Stolen/Damaged Products

Singh Electronics and the courier must be notified of any lost, stolen, or damaged product(s) within a 24-48 hour period after delivery. Singh Electronics will submit a claim with the courier to investigate, only when a decision has been reached by the courier can Singh Electronics move forward with a resolution. A shipping claim can take 30-90 days to be fully investigated, please be patient as we are not able to expedite this process. Furthermore, any claims or issues are the responsibility of the courier and will have to be brought up with them. By notifying us, we will attempt to resolve the issue on your behalf but it is not our responsibility once the product has departed our facilities. Insurance on orders is not included but can be purchased by emailing our team.  

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