# OSD Audio SMP200 Mono Subwoofer Amplifier - 200W

Delivering deep, controlled bass for home cinema and audio systems, the OSD Audio SMP200 is a compact yet powerful mono-channel subwoofer amplifier.

Designed to drive passive subwoofers with precision, this high-efficiency Class D amplifier outputs up to 200W of low-frequency energy, ideal for enriching your music, movies, or gaming experience.

Whether you're upgrading your home theatre setup or powering an in-wall or in-ceiling subwoofer, the SMP200 ensures tight, distortion-free bass.

Built for flexibility and performance, it features both line-level and speaker-level inputs, an adjustable low-pass filter, and a variable phase control to fine-tune bass response.

Its compact design allows for discreet installation, making it perfect for media rooms, lounges, or dedicated cinema spaces.

**FEATURES**

-   **200W Peak Class D Power**: Efficiently powers passive subwoofers with up to 200W for deep, room-filling bass.
-   **Compact Design**: Easily fits into AV cabinets or tight spaces, perfect for home installations without clutter.
-   **Variable Crossover Control**: Tailor the subwoofer’s output with an adjustable low-pass filter (30Hz–150Hz) to seamlessly blend with your main speakers.
-   **Speaker & Line-Level Inputs**: Flexible connection options for compatibility with most home audio systems.
-   **Auto Signal Sensing**: Automatically turns on when it detects an audio signal and powers down when inactive, improving energy efficiency.
-   **Phase Adjustment Dial**: Adjust phase (0°–180°) to align your subwoofer with other speakers, ensuring optimal sound integration.
-   **High Current Output**: Capable of driving 4-ohm subwoofers for more power and performance in demanding setups.
-   **Front Panel Volume Control**: Easily adjust the subwoofer level without reaching behind AV furniture.
-   **Protection Circuitry**: Built-in safeguards against overheating and short circuits maintain system longevity.
-   **Gold-Plated Terminals**: Ensures secure, corrosion-resistant connections for reliable long-term use.

###### What You Get

-   1 x SMP200 Amplifier
-   1 x Power Cable

###### Specifications

-   **Amplifier Type:** Subwoofer
-   **Amplifier Class:** Digital Class D
-   **Channels:** 1
-   **Power Output:** 200 Watts @ 4 Ohm
-   **Power Output:** 120W RMS @ 8 Ohm w/ 240W Peak
-   **Power Output:** 200W RMS @ 4 Ohm w/ 400W Peak
-   **Frequency Response:** 20Hz-160Hz +/-1dB THD: 1%
-   **Variable Crossover:** 35Hz-160Hz
-   **Variable Phase Switch:** 0 To 180 Degrees
-   **Impedance:** 8 Ohm And 4 Ohm Stable
-   **Signal To Noise Ratio:** 95dB
-   12V Trigger Mode
-   **Inputs:** Speaker (High) Level / Signal (Low) Level RCA
-   **Dimensions (L x H x D):** 216mm x 44mm x 249mm
-   **Weight:** 3.0kg
-   **Warranty:** 2 Years

## Details

- **Price:** 399.0 GBP
- **Vendor:** OSD Audio
- **Type:** Amplifiers
- **Tags:** BLACK5, SALE10

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 399.00 GBP | In stock |

## Images

- OSD Audio SMP300 + SC800D Black Series In Wall Subwoofer Package - Single - 300W - K&B Audio
- OSD Audio SMP300 + SC800D Black Series In Wall Subwoofer Package - Single - 300W - K&B Audio
- OSD Audio SMP300 + SC800D Black Series In Wall Subwoofer Package - Single - 300W - K&B Audio
- OSD Audio SMP300 + SC800D Black Series In Wall Subwoofer Package - Single - 300W - K&B Audio
- OSD Audio SMP200 Mono Subwoofer Amplifier - 200W - K&B Audio
- OSD Audio SMP200 Mono Subwoofer Amplifier - 200W - K&B Audio

---

> Source: [K&B Audio](www.kbaudio.co.uk/products/osd-audio-smp200-mono-subwoofer-amplifier-200w)
> Updated: 2026-06-18