Monitor Audio IWA-250

The Monitor Audio IWA-250 is a slim yet powerful subwoofer amplifier. Delivering up to 250 Watts into 4 Ohms, a single IWA-250 will power single or dual IWS-10 subwoofers to provide higher power levels for larger rooms or to meet customer demands. The IWA-250 can be configured to switch on automatically using input signal sensing, or by using the preferred 12V trigger link from an AVR or system source. The IWA-250 will then automatically be switched on and off with the AVR, TV or system remote control handset.

The IWA-250 utilises a cool running Class D power stage driven by a PWM with integrated DSP. Filtering and functionality are controlled in the software for precise and reliable operation. The IWA-250 offers a choice of single LFE, balanced XLR and stereo RCA inputs. Output connection is made via two sets of push type terminals to provide connection to one or a pair of IWS-10 drivers.

Perfect for...

Home cinema
Add dynamic bass to home cinema applications.


Use with the Monitor Audio IWS-10 in wall subwoofer and IWB-10 subwoofer back box. Best suited to medium and larger size rooms.

IWA-250 specification

Class D amplifier with switch mode power supply
Maximum power output - 250 Watts @ 4 Ohms
Low frequency response - 25Hz - 120Hz
RCA stereo inputs
LFE input
Two sets of spring loaded push terminals for easy installation
Fused IEC mains socket
Trigger input
<0.5 watt standby power consumption
DC short circuit protection, over current and thermal protection
Height x width x depth - 43.7mm x 432mm x 263mm

Key features

2 year warranty
Rigid high quality steel case
Switch mode power supply
Class D power amplifier
High efficiency design resulting in cool running
DSP control with advanced limiters
Volume control
EQ profile switch
Crossover control
Power LED with fault indication