---
product_id: 257128255
title: "Sundown Audio SFB-500.4D 4 Channel AMP Component Speakers Tweeters Amplifier"
brand: "sundown audio"
price: "R13160"
currency: ZAR
in_stock: true
reviews_count: 8
category: "Sundown Audio"
url: https://www.desertcart.co.za/products/257128255-sundown-audio-sfb-500-4d-4-channel-amp-component-speakers
store_origin: ZA
region: South Africa
---

# 500W RMS @ 1Ω - Powerhouse punch Variable Low/High Pass Filters - Precision tuning 4-Way Protection Circuit - Rock-solid reliability Sundown Audio SFB-500.4D 4 Channel AMP Component Speakers Tweeters Amplifier

**Brand:** sundown audio
**Price:** R13160
**Availability:** ✅ In Stock

## Summary

> 🎵 Power Meets Precision — Amplify Your Drive, Own the Road

## Quick Answers

- **What is this?** Sundown Audio SFB-500.4D 4 Channel AMP Component Speakers Tweeters Amplifier by sundown audio
- **How much does it cost?** R13160 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/257128255-sundown-audio-sfb-500-4d-4-channel-amp-component-speakers)

## Best For

- sundown audio enthusiasts

## Why This Product

- Trusted sundown audio brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Built to Last:** 4-way protection circuit guards against thermal overload, voltage spikes, speaker shorts, and DC offset for worry-free performance.
- • **Seamless Integration:** Compact surface mount design with optional wired remote control keeps your setup sleek and your control effortless.
- • **Bass Boost Brilliance:** Adjustable bass boost up to 12dB at 50Hz ensures your beats hit harder and deeper, perfect for immersive drives.
- • **Tailored Sound Control:** Variable 12 dB/octave low and high pass filters let you sculpt your audio experience with surgical precision.
- • **Unmatched Power Output:** Delivers up to 500W RMS per channel at 1Ω for crystal-clear, high-impact sound that commands attention.

## Overview

The Sundown Audio SFB-500.4D is a high-efficiency 4-channel Class D amplifier delivering up to 500W RMS per channel at 1Ω, featuring variable low/high pass filters, adjustable bass boost, and a robust 4-way protection circuit. Designed for audiophiles seeking clean, powerful sound with customizable tuning, it fits compactly with surface mount design and supports optional remote control for ultimate convenience.

## Description

SUNDOWN AUDIO SFB-500.4D 4 CHANNEL CLASS D AMPLIFIER FEATURES: High Efficiency Digital Multi-Channel Design 12 dB/Octave – Variable Low Pass Filter 12 dB/Octave – Variable High Pass Filter Variable Bass Boost Clipping Indicator 4 Way Protection Ciruit (Thermal, Voltage, Speaker Short, DC Offset) Optional Wired Remote Control with Clipping Indicator SPECIFICATIONS (Tested @ 14.4v): 1 ohm RMS: 500W / CH 2 ohm RMS: 300W / CH 4 ohm RMS: 200W / CH Recommended Fuse Rating: 180A Low Pass Filter (Variable): 50Hz-6kHz High Pass Filter (Variable): 15Hz-6kHz Bass Boost @ 50Hz: 0-12dB Input Sensitivity: 5V Max S/N Ratio: 100dB Working Voltage: 10.5v-15.5v Dimensions: 8.25 x 9.75 x 2.75

Review: Very versatile amp, clean power. - Very versatile amplifier. I'm running my front speakers off my head units amp, SA-69s on channel 1&2 and two Infinity 10.1 4ohms wired parallel for a two ohm load bridging channels 3&4 for 1000rms to them. It sounds excellent! A 200amp fuse is recommend for this little amplifier. It's capable of 2000rms total, depending on how you wire it. Make sure your electrical system is up to it.
Review: Clean power - This product is amazing works like it should clear sound and good healthy power works like a champ

## Features

- 1 Ohm RMS Power (14.4 V) 500 W x 4
- 1 Ohm RMS Power (12 V) 450 W x 4
- 2 Ohm RMS Power (14.4 V) 320 W x 4
- 2 Ohm RMS Power (Bridge) 1000 W x 2
- 4 Ohm RMS Power (14.4 V) 200 W x 4

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08QD6ML7Y |
| Best Sellers Rank | #145,809 in Electronics ( See Top 100 in Electronics ) #322 in Car Multichannel Amplifiers |
| Brand | Sundown Audio |
| Customer Reviews | 4.0 4.0 out of 5 stars (48) |
| Date First Available | December 11, 2020 |
| Item Weight | 8 pounds |
| Item model number | SFB-500.4D |
| Manufacturer | Sundown Audio |
| Manufacturer Part Number | SFB-500.4D |
| Maximum Supply Voltage | 15.5 Volts (DC) |
| Minimum Supply Voltage | 10.5 Volts (DC) |
| Mounting Type | Surface Mount |
| Number of Channels | 4 |
| Output Power | 500 Watts |
| Package Dimensions | 12.13 x 11.22 x 5 inches |
| Package Type Name | box |
| Specification Met | CE |
| Supply Current | 100 Amps |
| Voltage | 10.5 Volts |

## Product Details

- **Manufacturer:** Sundown Audio
- **Maximum Supply Voltage:** 15.5 Volts (DC)
- **Minimum Supply Voltage:** 10.5 Volts (DC)
- **Mounting Type:** Surface Mount
- **Voltage:** 10.5 Volts

## Images

![Sundown Audio SFB-500.4D 4 Channel AMP Component Speakers Tweeters Amplifier - Image 1](https://m.media-amazon.com/images/I/81MJI69xrSL.jpg)
![Sundown Audio SFB-500.4D 4 Channel AMP Component Speakers Tweeters Amplifier - Image 2](https://m.media-amazon.com/images/I/81r684VoYSL.jpg)
![Sundown Audio SFB-500.4D 4 Channel AMP Component Speakers Tweeters Amplifier - Image 3](https://m.media-amazon.com/images/I/91MIBO2M67L.jpg)
![Sundown Audio SFB-500.4D 4 Channel AMP Component Speakers Tweeters Amplifier - Image 4](https://m.media-amazon.com/images/I/91oPH7pYbZL.jpg)

## Questions & Answers

**Q: Does the power terminal fit 0 guage?**
A: It does fit 0

**Q: Two ds18 superBullet tweeter 200rms both and ds18 speaker 225rms both back ds18 speaker 6x9 275rms both can i use this amo for the speaker and tweeter**
A: Hi,

if you bridge some of the speakers this will allow you to run everything off this one amp. If you'd like to speak with our techs you can reach us at (323)-231-3525 call/text and they can assist you on how to wire these for maximum performance.

Thank You.

**Q: Will  this amp handle 4 mids and 4 tweeters  4 ohm each in parallel**
A: It will do a great job. We’d suggest putting one mid and tweeter per channel. Feel free to send us a direct message for more information

**Q: How much rms**
A: Hi,

this amp does
500 watts per channel at a final 1 ohm load.
300 watts per channel at a final 2 ohm load.
200 watts per channel at a final 4 ohm load. If you have any other tech related questions feel free to reach out to us at (323)-231-3525 call or text.

Thank You.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Very versatile amp, clean power.
*by J***. on April 18, 2021*

Very versatile amplifier. I'm running my front speakers off my head units amp, SA-69s on channel 1&2 and two Infinity 10.1 4ohms wired parallel for a two ohm load bridging channels 3&4 for 1000rms to them. It sounds excellent! A 200amp fuse is recommend for this little amplifier. It's capable of 2000rms total, depending on how you wire it. Make sure your electrical system is up to it.

### ⭐⭐⭐⭐⭐ Clean power
*by M***T on April 3, 2024*

This product is amazing works like it should clear sound and good healthy power works like a champ

### ⭐ Started smoking
*by G***E on November 30, 2023*

Went to plugin the ground wire and the amp started smoking….

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**Shop now:** [https://www.desertcart.co.za/products/257128255-sundown-audio-sfb-500-4d-4-channel-amp-component-speakers](https://www.desertcart.co.za/products/257128255-sundown-audio-sfb-500-4d-4-channel-amp-component-speakers)

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*Product available on Desertcart South Africa*
*Store origin: ZA*
*Last updated: 2026-02-06*