SUNDOWN AUDIO SFB-1800.5D ( 5 Ch Full Range Amplifier)

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  • Sundown Audio SUNDOWN AUDIO SFB-1800.5D 5 Ch Full Range Amplifier
  • Sundown Audio SUNDOWN AUDIO SFB-1800.5D 5 Ch Full Range Amplifier
MSRP: $499.99
— You save $27.00
Frequently bought together:


The new SFB series is being kicked off with  1800.5D a 5 Channel Full Range Amplifier. This is a "full range" mono ideal for "PA" type speakers as well as standard bass applications. 

1-2 channel at 2 ohm - 300 w rms

3-4 channel at 4 ohms  200 w rms

5 channel, at 1 ohm:  1000w

5 Channel; at 2 & 4 ohm : 500 at 2 / 250 at 4

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Warranty Information

Warranty Information

Sundown Audio requires us to send customers with equipment problems directly to them for all warranty and non-warranty claims. Please follow their proceedures..


Sundown Audio RMA form:

Sundown Audio Product Warranty Information:


Sundown Audio - Hours of Operation

Monday 9am - 5pm EST
Tuesday 9am - 5pm EST
Wednesday 9am - 5pm EST
Thursday 9am - 5pm EST
Friday 9am - 5pm EST
Saturday Closed
Sunday Closed
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5 Reviews

  • 5
    SFB 1800.5

    First, JP and the team are awesome! My amp arrived fast, packaging was good with a thank you and a lollipop. Keep up the great customer service! Oh, the amp is a powerhouse. Lovin’ life!

  • 5

    Powerful and great sounding amp!

  • 5
    Sundown Audio 5 channel amp

    One amp powers whole system, this all you need,its clean and very efficient.Down4sound youre the best,no sales tax, free shipping and two day delivery.

  • 5
    SFB 1800.5

    Quite impressive for the price. Sundown never fails to amaze with their products and Jonathan Price never fails at keeping his word with super quick shipping. Only place I will buy car audio products

  • 5

    When will this be available?

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