Sundown SFB-1000D Full-Range Mono Amplifier v.2
1000 W RMS at 1 ohm with filters and wired remote
$199.99$249.99 (-20%)
Overview
The Sundown SFB-1000D v.2 is a compact full-range mono Class D amplifier rated 1000 W RMS at 1 ohm, 850 W at 2 ohms, and 500 W at 4 ohms. Variable high-pass and low-pass filters, bass boost, and a wired remote with clipping indicator support sub or full-range installs. Recommended fuse rating is 100 A.
Product details
Compact 1-ohm power
Rated 1000 W RMS @ 1 Ω, 850 W @ 2 Ω, and 500 W @ 4 Ω. The Brazilian-style full-bridge layout stays compact while remaining stable down to 1 ohm.

Filters and boost
Variable 12 dB low-pass (80 Hz–20 kHz) and high-pass (15 Hz–1 kHz) filters plus bass boost at 50 Hz help match sub or mid/high loads. Working voltage is listed as 10.5–15.5 V.

Remote and fuse plan
A wired remote with clipping indicator is included. Plan a 100 A fuse and chassis space of about 7.25 × 5.75 × 2.50 inches.
Key features
- 1000 W RMS @ 1 Ω / 850 W @ 2 Ω / 500 W @ 4 Ω
- Full-range Class D mono (v.2)
- Stable down to 1 ohm
- Variable 12 dB LPF 80 Hz–20 kHz
- Variable 12 dB HPF 15 Hz–1 kHz
- Bass boost @ 50 Hz
- Wired remote with clipping indicator
- Recommended fuse 100 A
- Dimensions about 7.25 × 5.75 × 2.50 in
Specifications
| Weight | 3.3 lbs |
|---|---|
| Dimensions | 7.25 × 5.75 × 2.5 in |
| Channels | Mono |
| Brand | Sundown |
| Model | SFB-1000D |
| SKU | SFB1000D |
| UPC | 636655223206 |
| Product type | Mono amplifier |
| Channels | Mono |
| Class | D (full bridge) |
| RMS @ 1 Ω | 1000 W |
| RMS @ 2 Ω | 850 W |
| RMS @ 4 Ω | 500 W |
| Fuse rating | 100 A |
| Working voltage | 10.5–15.5 V |
| Dimensions | 7.25 × 5.75 × 2.50 in |
| Remote | Wired with clipping indicator |
Important notes
- Use 100 A fusing and power/ground wire sized for the load (kit sold separately)
- Make sure speaker impedance before final wiring
- Set gains carefully to avoid clipping
- Professional installation recommended
What's in the box
- Sundown SFB-1000D amplifier
- Wired remote control
- Mounting hardware as packaged







