Sundown Audio Smart Monoblock Amplifier Full-Range Class-D 5000W SIA-5 — Big Jeff Audio Dealer Platform
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  • Powerful Performance - Experience the pinnacle of audio power with the Sundown Audio SIA 5000D, a digital Class-D mono block amplifier capable of delivering an impressive 5000W RMS at 1 Ohm, ensuring a robust and high-performance audio experience.
  • Intelligent Technology - Elevate your audio system with intelligent features, including low voltage technology that safeguards the amplifier from common full bridge malfunctions. The dual MOS-FET PWM power supply ensures efficient energy delivery for a superior audio output.
  • Smart Cooling Management - Stay cool under pressure with the Smart Cooler heat management system. Equipped with a fan powered by temperature or audio, offering three speeds, the SIA 5000D ensures optimal operating conditions for extended listening sessions.
  • Versatile Controls - Customize your audio experience with precision using the 12 dB/Octave variable low pass filter, adjustable bass boost ranging from 0 to 12dB at 50Hz, and a wired remote control with a clipping indicator for convenient monitoring and adjustments.
  • Reliable Protection - Trust in the durability of the SIA 5000D, featuring a 4-way protection circuit against thermal issues, voltage fluctuations, speaker shorts, and DC offset. With tested performance at 14.4 volts, this amplifier is designed for stability and longevity in your car audio system.

Sundown Audio Smart Monoblock Amplifier Full-Range Class-D 5000W SIA-5000D

This Listing includes:

  • (1) Monoblock Amplifier Full-Range Class-D 5000W

Sundown Audio SIA 5000.1D is Sundown Audio's latest and greatest intelligent full bridge amplifier, the sundown SIA 5000 is power supply is built stronger, heatsink is heavier, and the SIA 5000 features intelligent low voltage technology protecting the amplifier from typical full bridge malfunction. Smart Cooler (Fan powered by temperature or audio, with 3 speeds)


  • Digital Class-D Mono Block Amplifier

  • Dual MOS-FET PWM Power Supply

  • 1 Ohm Stable Load

  • 12 dB/Octave – Variable Low Pass Filter

  • 0 to 12dB – Variable Bass Boost

  • 4 Way Protection Circuit (Thermal Voltage Speaker short and DC Offset)

  • Wired Remote Control with Clipping Indicator


  • Tested at 14.4 Volts

  • 1Ohm Mono: 5000W RMS

  • 2Ohm Mono: 4000W RMS

  • 4Ohm Mono: 2750W RMS

  • Recommended Fuse Rating: 2x250A

  • Low Pass Filter: 40Hz – 20kHz

  • High Pass Filter: 10Hz – 1kHz

  • Level (Bass Boost): 0 – 12dB (50Hz)

  • Input Sensitivity: 5V Max

  • Single Noise Ratio: 108dB

  • Working Voltage: 10.5V – 15.5V DC

Dimensions (LxWxH): 8.86" x 13.78" x 2.7"

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.

When you click on the Buy it Now button you are entering into a
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.