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BOSS Audio Systems

BOSS Audio OX3KD Onyx Model 3000 Watt High Output Monoblock Full Range Class D Amplifier with Variable Low Pass Crossover and Remote Control

  • Based on 592 reviews
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Availability: Only 1 left in stock, order soon!
Fulfilled by always quality
Arrives Tuesday, Jan 13
Order within 21 hours and 48 minutes
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Style: 3000W Monoblock


Features

  • Monoblock
  • Class D Topology
  • 1 Stable
  • PWM MOSFET Power Supply
  • RCA In/Out
  • Low Pass Filter
  • Subsonic Filter
  • Bass Boost
  • Phase Control
  • Remote Subwoofer Control
  • Strapping Capable
  • LED Illumination
  • Thermal, Short and Overload Protection Circuits

Item dimensions L x W x H: 12.25 x 7 x 2.3 inches


Manufacturer: BOSS Audio Systems


Mounting Type: Surface Mount


Brand: BOSS Audio Systems


Number of Channels: 1


Item dimensions L x W x H: 12.25 x 7 x 2.3 inches


Manufacturer: BOSS Audio Systems


Mounting Type: Surface Mount


Brand: BOSS Audio Systems


Number of Channels: 1


Output Power: 2250 Watts


Package Type Name: box


Material: Semiconductor


Global Trade Identification Number: 19


UPC: 791489125819


Product Dimensions: 12.25 x 7 x 2.3 inches


Item Weight: 6.5 pounds


Item model number: OX3KD


Other display features: Wireless


Date First Available: February 25, 2019


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Tuesday, Jan 13

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews

    • Pushing 2 15's no problem
Gotta say I'm impressed with this amp. I upgraded from a Boss 1500w due to my rca inputs going out, typical since the amp was 8yrs old and I put it through hell in those 8yrs. But this 4000w amp is legit, definitely worth the money. It's pushing my 2 15 Skars just fine, got them wired at 2ohms right now. Gonna drop it down to 1ohm and see how it's hitting. Very impressed and would recommend. ... show more
Reviewed in the United States on November 8, 2024 by Jason G.
    • Amazon is awesome!
Style: 1500W Monoblock
The amp works great but the bass boost knobe does not work!
Reviewed in the United States on April 17, 2025 by Alexander
    • Untime and performance
Great quality works excellent and was delivered untime
Reviewed in the United States on July 30, 2025 by Felicia McKenzie
    • Great amp for price
Style: 1600W 4-Channel
While it isn't 4000w like the selection suggests. As long as you read the title and look at the pics you'll see it's 1600w which was just what I needed. Overall helps the subs a great amount. 2 kicker vr 12s and they really hit with it! My bass knob doesn't seem to function but other than that very happy with it! ... show more
Reviewed in the United States on July 17, 2022 by Cole
    • had to be replaced, both the original and replacements do not work streight from box.
Style: 3000W Monoblock
I am normally a huge fan of boss audio products, I recently baught one of the boss audio elite decks along with 2 new 800W boss audio elite 10" subs. I had the quiet riot amp before but it just doesnt have the power needed. I baught this one and had to send it back because it clipped from factory. I have it the benefit of the doubt and got a replacement one and completely fresh out of the it just streight doesnt work. I plugged the old amp in before and after and it works. very dissapointed at this. 2 separate amps both faulty at factory. I personally wouldnt suggest this amp, atleast not from this retailer. ... show more
Reviewed in the United States on July 31, 2021 by cameron whitney
    • Works well
It's a boss, so the performance ratings are well over exaggerated. But the led lit emblem is cool. Lol. It works well, for the subwoofer I was mating it to, so no complaints. It's a decent starter amp.
Reviewed in the United States on February 15, 2025 by Joshua Shytle
    • Good price for this amp
Style: 1600W 4-Channel
I used this amp to power 2 10’s 1100w subs connected to one terminal and 2 800w 6x9 and 2 400w 6.5 they slap! Only problem is when turning up the gain on the subs would go into protect for no reason but I managed to keep it low and have good bass. It sometimes overheats but I don’t mind it.
Reviewed in the United States on March 19, 2021 by Jorge G.
    • Excellent sound
Installed in a motorcycle, the LED logo lights up blue and looks great. Sounds great as long as your speakers are the correct RMS rating.
Reviewed in the United States on January 1, 2024 by C. Blankenship

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