AR4-1800 4 Ch Amplifier 1800W Class A/B Full Range Bass 2 Ohm Stable O — Big Jeff Online Inc
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Free shipping with delivery in 2-4 days See details



AR4-1800 4 Ch Amplifier 1800W Class A/B Full Range Bass 2 Ohm Stable OPEN BOX

SKU SS-AR4-1800-OPEN-8314
Sold out
Original price $148.69
Original price $148.69 - Original price $148.69
Original price $148.69
Current price $72.13
$72.13 - $72.13
Current price $72.13
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This is a Sample Product Title
Was $200.00 Now $100.00
  • Works Fine. Missing Screws on Face Plate. Brackets Bent. Install Damage. Minor Surface Scratches.
  • Open-box items are not subject to returns
  • They are sold "As Is"
  • All requests for returns will not be accepted

This Listing Includes:

(1) AR4-1800 1800W 4 Channel Amplifier


  • Open Box: Minor surface scratches

  • Install Damage: Missing screws on face plate, brackets bent

  • Functionality: Works fine

  • Note: Open-box items are sold "As Is" and are not subject to returns. All requests for returns will not be accepted.

Amplifier Specifications:

  • Model: AR4-1800

  • Type: 4 Channel Class A/B Full Range Amplifier

  • Power Output:180W x 4 @ 4 Ohm

    225W x 4 @ 2 Ohm

    450W x 2 @ 4 Ohm Bridged

    1800W Max Power

  • Crossover:High Pass (Ch 1&2): Variable 120-3kHz, 12 dB

    High Pass (Ch 3&4): Variable 120-3kHz, 12 dB

    Low Pass (Ch 3&4): Variable 50-250Hz, 12 dB

  • Bass Boost: 6dB & 12dB 50Hz switch

  • Total Harmonic Distortion (THD): 0.05%

  • Frequency Response: 15-20kHz

  • Signal-to-Noise Ratio: 105dB

  • Input Sensitivity: 200mV-6V

  • Protection: Direct Short, Thermal & Overload Circuit Protection

  • Features: Military Grade PCB w/ PWM MOSFET Power Supply, Stereo Low-Level RCA Inputs

  • Power and Speaker Wire Outputs: 4G Power Wire & 8G Speaker Wire

  • Treble Boost: 12 dB, enhances upper octave harmonics

  • Dimensions: 15.75" x 8.5" x 2.125"

  • Stability: 2 Ohm Stereo, 4 Ohm Bridged Full Range

Note: This amplifier is designed for a wide range of audio applications, offering significant power output and control for a high-quality sound experience. The open-box condition is reflected in the price, providing an opportunity for those looking for a high-performance amplifier at a reduced cost.

Payment Information


We accept PayPal for all ebay orders. You can use your credit through PayPal as all major credit card are accepted by PayPal.

We accept PayPal for all international orders, your address must be verified with PayPal.

We are not responsible for any custom duties or brokerage fees that may apply for all international orders.

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contract whereby you agree to purchasing the item at the price listed.

If you want to ship your item to an alternate address please add
that address on your PayPal account and use the address as the default
or confirmed address to pay us through PayPal

With Free Same Business Day Shipping we work to get you your order Fast. 


All orders over $500 will require a signature for delivery.

All pre-selected shipping rates and methods are for customers with a
valid residential or commercial address within the Contiguous 48 United
States (PO Boxes address may require additional charges).

P.O. Boxes, APO/FPO addresses, Alaska, Hawaii, Puerto Rico, Guam,
U.S. Virgin Islands, Northern Mariana Islands, American Samoa, Canada,
and other countries may require additional shipping fees. Please contact
a member of our team for detailed shipping charges.

Shipping is available only to PayPal verified addresses. When making
payment please confirm your address has been verified with PayPal. Once
payment is made shipping address can not be changed/altered. Payments
made using an unverified PayPal address will be refunded and order will
be canceled.

We will not accept request to change shipping address once payment
has been made. Please confirm your shipping address is up-to-date and

Typical handling time for orders is 1-business day. We do our best
to ship every package with-in 1 business day of receiving a cleared
payment. In some circumstances additional time may be need, in which
case we will contact buyer.

Shipped orders that are returned by the shipping company due to an
insufficient address or an undeliverable address will be refunded less a
20% restocking fee.

If package is refused or marked undeliverable and returned
back to us by the carrier, you will need to pay the shipping cost in
full to have the package sent back to you or we can refund the money
minus the cost of shipping


If you have not received your package, but the tracking information shows that it was delivered,
please do the following within 36 hours of expected, stated delivery:


Verify the shipping address on the order is the address where you are looking for the package

Look for a notice of attempted delivery

Look around the delivery location for the package, or see if a neighbor has accepted the delivery

Be sure to double check your mailbox and other usual spots for package delivery


If you think that your package has been stolen, we will require a police report since this is now theft.
Once we have a police report on file for the stolen package, we will reship your order.

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