# Monitor Audio IWA-250 Subwoofer Amplifier

The Monitor Audio IWA-250 delivers up to 250 watts into 4 ohms, a single IWA-250 will power single or dual **IWS-10**'s to provide higher power levels for larger rooms or to meet customer demands.

**FEATURES**

-   Rigid, high quality steel case
-   Switch mode power supply
-   Class D power amplifier delivering up to 250 watts into 4 ohms (dual IWS-10 drivers)
-   High efficiency design resulting in cool running – low thermal output
-   DSP controlled with advanced limiters
-   <0.5watt standby power consumption (ErP certified)
-   DC short circuit protection, over-current and thermal protection

###### What You Get

-   1 x IWA-250 Amplifier
-   1 x Power Supply

###### Specifications

-   **System Format:** Active subwoofer amplifier
-   **Lower Frequency Limit:** 25 Hz
-   **Upper Frequency Limit:** Variable 40 – 120 Hz @ 24 dB/Octave
-   **Amplifier Output:** 250 W @<1% THD+N
-   **Drive Unit Complement:** 4 – 8 ohms
-   **Amplifier Classification:** Class D amplifier with Switch Mode Power Supply (SMPSU)
-   **Cabinet Support:** For use with the dedicated back box
-   **EQ:** Music, Movie, Impact
-   **Phase Control:** 0°&180°
-   **Auto Sensing:** Line level > 3.5 mV
-   **Input Level Requirements:** Standby after approximately 15 minutes of no signal
-   **Input Impedance:** > 20K ohms
-   **Mains Input Voltage:** AC 110 – 120 V ~ 50/60 Hz, AC 220 – 240 V ~ 50/60 Hz (Factory Region Preset)
-   **Dimensions (H x W x D):** 43.7 x 432 x 263 mm (1¾ x 17 x 10⅜")
-   **Connection:** LFE in (Stereo RCA and Balanced), 12V Trigger in (3.5 mm mono mini-jack), left and right speaker output
-   **Trigger Input:** 5 – 12V via 3.5 mm mono mini-jack socket
-   **Power Consumption:** Standby<0.5 W (ErP approved), Typical Idle<10 W, Max Rated 200 W
-   **Weight (Unpacked):** 4 kg
-   **Sold As:** Single unit
-   **Warranty:** 1 Year

## Details

- **Price:** 425.0 GBP
- **Vendor:** Monitor Audio
- **Type:** Amplifiers
- **Tags:** BF10, BLACK10, BLACK5

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 425.00 GBP | In stock |

## Images

- Monitor Audio In Wall Subwoofer Package - Dual - 250W - K&B Audio
- Monitor Audio In Wall Subwoofer Package - Dual - 250W - K&B Audio
- Monitor Audio In Wall Subwoofer Package - Dual - 250W - K&B Audio
- Monitor Audio In Wall Subwoofer Package - Dual - 250W - K&B Audio
- Monitor Audio In Wall Subwoofer Package - Dual - 250W - K&B Audio

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> Source: [K&B Audio](https://www.kbaudio.co.uk/products/monitor-audio-iwa250-subwoofer-amplifier)
> Updated: 2026-06-10