JL Audio Refurbished 300/4v3: 4 Ch. Class A/B Full-Range Amplifier 300 W

JL Audio

1 review Write a Review
You save $420.00
You save $420.00


This item has been discontinued. A newer version may be available, please reach out via chat or call us at 800-854-5821 for help finding your desired item.

Refurbished JL Audio 300/4

This amplifier has been factory refurbished by JL Audio and comes with a 90-Day Warranty.

If you prefer a traditional Class A/B design taken to its highest possible level, the 300/4v3 is your amplifier, thanks to its outstanding fidelity, reliability and well-designed feature set.

This classic amplifier features JL Audio's unique, and patented, Absolute Symmetry Class A/B circuit and our R.I.P.S. power supply design for full power delivery (75 W x 4) over a wide range of load impedances and vehicle voltages.

This amplifier features an all-black look that is pure, sexy evil, including the powder-coated cast alloy heat sink and end caps.

Rated Continuous (RMS) Power @ 14.4 V

@ 4 Ω 75 W RMS x 4
@ 3 Ω 75 W RMS x 4
@ 2 Ω 75 W RMS x 4
@ 1.5 Ω 75 W RMS x 4
Bridged @ 8 Ω 150 W RMS x 2
Bridged @ 4 Ω 150 W RMS x 2

Rated Continuous (RMS) Power @ 12.5 V

@ 4 Ω 75 W RMS x 4
@ 3 Ω 75 W RMS x 4
@ 2 Ω 75 W RMS x 4
@ 1.5 Ω 75 W RMS x 4
Bridged @ 8 Ω 150 W RMS x 2
Bridged @ 4 Ω 150 W RMS x 2

General Specifications

Frequency Response 5 Hz - 30 kHz (+0, -1dB)
S/N Ratio, referred to highest rated power >108.5 dB (A-weighted, 20 Hz - 20 kHz noise bandwidth)
S/N Ratio, referred to 1 W >89.5 dB (A-weighted, 20 Hz - 20 kHz noise bandwidth)
Damping Factor @ 4 Ω >300 / 50 Hz
THD+N @ Rated Power <0.03% @ 4 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) 12/24 dB/octave
Filter Frequency Range 50 Hz - 5 kHz
Detented, Calibrated Filter Freq. Potentiometers Yes
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 None
Source Channel Selection for PreOuts N/A

Physical Specifications

Height (H) 2.36 in / 60 mm
Width (W) 13.40 in / 340 mm
Depth (D) 9.25 in / 235 mm

Refurbished FAQ

Refurbished Frequently Asked Questions

  • What does refurbished mean? Refurbished products may be unused customer returns that are essentially "new" items, or they may be defective products that were returned under warranty, and resold by the manufacturer after repairing the defects and ensuring proper function.
  • What is the warranty? All of our manufacturer refurbished items come with a 90-day warranty. Compared to the new products we carry generally having a 1-year or longer warranty. (JL Audio Amps are 2-years, and all of Wet Sounds carries a 2-year warranty when new)
  • What's it look like? A lot of the manufacturer refurbished products we sell generally look very good, and sometimes you can't even tell. However, these products can have some wear and tare on them, and we generally rate them an 8/10 cosmetically, and perfect 10/10 functionally.
  • What was wrong with it? We aren't told what is wrong with each and every product. Like stated above, they could have just been a return or they may have had an issue. Regardless, they are all combed over by their respective manufacturer to function as new before being shipped to us.
  • Have more questions? Call us, send us a chat, or an email. We'll be able to answer any additional questions you may have.

Extra Information

JL Audio
13.70 LBS
Number Of Channels:
4 Channel
RMS Power In Watts:
251-500 Watts
Manufacturer SKU:
Click Here
13.7000 lbs
Special Offer:
This item includes a FREE CreativeCare 1-Year Warranty Upgrade at no additional cost!
Free 2-Day Shipping!

Warranty Information

JL Audio

Related Products

    1 Reviews

  • Posted by mark krieger on 6th Jun 2020


    JL Slasher 300/4

    I purchased this amp to replace a original series 300/4. This amp is another level of awesome...I was sceptical of ordering a refurbished amp but I am very pleased