Open Box, Great - Sundown Audio SFB-1000D Class D SFB Series Monoblock Amplifier (Open Box, Great)

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Product highlights

• 500 watts x 1 channel @ 4 ohm
• 850 watts x 1 channel @ 2 ohm
• 1000 watts x 1 channel @ 1 ohm
• Total RMS Power: 1000 watts
• Class D 1 ohm Stable Monoblock Amplifier

Learn more about the sfbv21000_obg

Description

Authorized dealer

Item Condition - Open Box, Great:

This product works like new, is well-cared-for and in great condition. May show limited signs of wear or use and may be missing non-essential parts, accessories or original packaging.

Sundown Audio SFB-1000D (A-SFBV21000)

1000W RMS Class D SFB Series Monoblock Car Amplifier
Quantity: 1

Product Details:

SFB Series Class D 1 ohm Stable Monoblock Amplifier
RMS Power Rating:

4 ohm: 500 watts x 1 channel
2 ohm: 850 watts x 1 channel
1 ohm: 1000 watts x 1 channel

Total RMS power output: 1000 watts
Power, protection & clipping indicators included
Thermal, voltage, speaker short, and dc-offset protection circuitry
Wired remote control with clipping indicator included
Input sensitivity: 0 - 5 volts
Signal to Noise Ratio: 100 dB
Variable low-pass filter: 80 - 20000 Hz
Variable high-pass filter: 15 - 1000 Hz
Variable Bass Boost: 0 - 9 dB
Fuse Rating: 100A
4 AWG gauge amplifier wiring kit is recommended for installation
Dimensions: 7.25" L x 2.50" W x 5.75" H
Authorized Internet Dealer
1-year Manufacturer's Warranty
MFR #: A-SFBV21000

Specifications & Details

Key Features

Amplifier Key Features

Bass Boost

Power Specifications - Subwoofer Channel

RMS Power @ 4 ohms

500 watts x 1 channel

RMS Power @ 2 ohms

850 watts x 1 channel

RMS Power @ 1 ohm

1000 watts x 1 channel

Amplifier Specifications

Series

SFB Series

Amplifier Class

Number of Channels

1 - Mono

Total RMS Power Output

1000 watts

Minimum Impedance Unbridged

1 ohm

Speaker Level Inputs

Yes

Built-in Crossover

Low-Pass (LP)
High-Pass (HP)

High-Pass Crossover Frequency

15 - 1000 Hz

Low-Pass Crossover Frequency

80 - 20000 Hz

Signal-to-Noise Ratio

100 dB

Bass Boost

0 - 9 dB

Remote bass/level controller

Total Fuse Rating

100

Amp Bluetooth Connectivity

Hi-Res Certified

Low-Level Input Sensitivity

0 - 5 volts

High-Level Input Sensitivity

0 - 5 volts

What is in the box?

Paperwork

User manual

WITB: Amplifiers

Amplifier

Warranty and Return Policy

Parts Warranty Duration

1 year

Labor Warranty Duration

1 year

Warranty Provider

Manufacturer

Customer Ratings & Reviews

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Overall rating distribution

5 star		100%
4 star		0%
3 star		0%
2 star		0%
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By feature average rating

Durability		5
Value		5
Features		5
Design		5
Usability		5

Customer Reviews

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drop the bass, how low can u go"

The following review is for A-SFBV21000, which is a part of the bundle you are viewing.

This amp hit hard and drop some serious bass lows. How high can this small amp go, drop the mic type ishhhh! the rms say 1000 at bench test 1415 rms, like it's pushing 2 12's Memphis 1600 watt with no problem @ 1ohn. I brought another one for my Camaro z28 rocking 2 12's pioneer 1500-watt subs.

By Ernest on July 8, 2025

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