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Kicker KPX- Series Marine & Power Sports Narrow Range Amp 500-W 1-CH | 51KPX5001

CASE QUANTITY: 6

PACKAGE WEIGHT: N/A

SKU KI-51KPX5001
Save 44% Save 44%
Original price $399.99
Original price $399.99 - Original price $399.99
Original price $399.99
Current price $223.96
$223.96 - $223.96
Current price $223.96

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  • Extreme Conditions Performance: Engineered to withstand the harsh conditions of powersports and outdoor audio applications, delivering massive power while remaining highly efficient, perfect for systems with less robust charging setups.
  • Versatile Compatibility: Compatible with a wide range of KICKER products, including powersports speakers, full-range speakers, or classic aftermarket speakers, ensuring seamless integration into any audio system setup.
  • Compact and Weather-Resistant: Despite its small footprint and weather-resistant design, this amplifier packs a punch, offering reliable performance even in challenging environments.
  • Dynamic Power Output: With a dynamic power of 750W and RMS power output ranging from 150W @ 4-Ohm mono to 500W @ 1-Ohm mono, this amplifier delivers powerful and clear audio reproduction across various impedance levels.
  • Customizable Sound Control: Features a selectable electronic crossover (24dB/Octave, Variable Lo-Pass 40–160 Hz) and KickEQ Bass Boost (Selectable 0/+6dB Bass Boost @ 40Hz), allowing you to fine-tune your audio output to suit your preferences.


Kicker KPX- Series Marine & Power Sports Narrow Range Amp 500-W 1-CH | 51KPX5001


This Listing Includes:



  • (1) Kicker KPX 500watt Monoblock Amplifier.


The KPX-series amplifiers have been engineered to handle the extreme conditions of powersports and outdoor audio applications, provide massive amounts of power, and continue to be cutting-edge efficient, making them perfect for less robust charging systems. Use with any combination of KICKER products, whether powersports speakers, full-range speakers, or KICKER’s classic aftermarket speakers. And don’t let the small, weather-resistant footprint fool you; this amp came to play.


Technical Specifications:



  • Dynamic Power: 750W

  • RMS Power Output: @14.4V

  • 14.4V, 4-Ohm mono, < 1% THD+N: 150W X 1

  • 14.4V, 2-Ohm mono, < 1% THD+N: 300W x 1

  • 14.4V, 1-Ohm mono, < 1% THD+N: 500W x 1

  • Frequency Response [Hz]: 10Hz-160Hz

  • Selectable Electronic Crossover: 24dB/Octave, Variable Lo-Pass 40-160 Hz

  • KickEQ Bass Boost: Selectable 0/+6dB Bass Boost @ 40Hz

  • Subsonic Filter: 24dB/Octave, Variable Hi-Pass 10-40Hz

  • Remote Bass Control: Yes, CXARC (Not Included)

  • Signal-to-Noise Ratio [dB]: >90dB, a-weighted, re: rated power.

  • Signal-to-Noise Ratio [dB]: >75dB (ref: 1W output)

  • Input Sensitivity: Low Level: 125mV-5V || High Level: 1V–40V


Dimensions:



  • Length: 8 1/2" = 21.7cm

  • Height: 1 1/16" = 4.3cm

  • Width: 3 5/8" = 9.2cm

Accepted Payment Methods at Big Jeff Audio

At Big Jeff Audio, we strive to make your shopping experience as smooth as possible by offering a wide variety of payment options. Below is a complete list of the payment methods we accept:

Credit and Debit Cards

  • Visa
  • Mastercard
  • American Express
  • Discover
  • Diners Club

Digital Wallets

  • Amazon Pay
  • Apple Pay
  • Meta Pay (formerly Facebook Pay)
  • Google Pay
  • Shop Pay
  • PayPal

International Payment Methods

  • Bancontact
  • iDEAL

Bank Transfers

  • Zelle

Financing Options

We also offer financing options to make purchasing easier. Learn more about our financing options here.

  • Klarna
  • Affirm
  • Sezzle
  • Snap
  • Acima
  • Tiptop

If you have any questions or need assistance with payments, feel free to reach out to us at info@bigjeffaudio.com or call us at 737-BIG-JEFF.

Shipping Options and Delivery Time

Do You Offer Expedited Shipping?

Yes! At checkout, you can select from different shipping options:

  • Standard Shipping: Free for orders over $100.
  • Expedited Shipping: Available at an additional cost, calculated based on the weight and destination of your order.

How Long Does Delivery Take?

  • Handling Time: Most orders are processed and shipped within 1 business day after receiving cleared payment. Occasionally, additional handling time may be required, but we’ll notify you if that’s the case.
  • Standard Shipping: Typically takes 3-5 business days, though delivery may be affected by extreme weather or holidays.

What Happens If My Package Is Undeliverable?

If your package is refused or marked undeliverable and returned to us by the carrier, you’ll need to pay the full shipping cost to have the package resent. Alternatively, we can refund your order, minus the cost of shipping.

Why Can’t I Track My Order?

If you're having trouble tracking your order:

  • Make sure you’ve received the shipping confirmation email with the tracking number.
  • Log into your account on our website and use the “Check Your Order Status” button.
  • If the issue persists, please refer to our detailed guide on tracking your order or contact our customer service team for further assistance.

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