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Monitor Audio IA40-3 Discreet Custom Installation Amplifier

Free UK Delivery



Monitor Audio IA40-3 Discreet Custom Installation Amplifier

The IA40-3 is Monitor Audio's smallest and most discreet amplifier designed to perfectly provide music in smaller rooms, whether with a pair of in-ceiling speakers or with a smaller pair of bookshelf speakers.

If your setup includes a TV, the IA40-3 can be mounted behind the screen, using the included bespoke mounting bracket. Making this amplifier perfect to power one of Monitor Audio's passive soundbars or a set of in-wall speakers. With 40 Watt's of power when using 3 channels (Left, Centre & Right) or 60 Watts when using 2 channels, the IA40-3 is more than capable of filling your room with high-fidelity sound.

The IA40-3 features a sub/line out to connect to any active subwoofer for added bass output. The amplifier also features both optical Toslink and analogue 3.5mm jack inputs along with high-resolution aptX bluetooth for simple connection to any smartphone or computer.

The IA40-3 comes with Monitor Audio's extensive 5-Year Warranty.

Who are Monitor Audio?

Started in 1972 by the charismatic Mo Iqbal, Monitor Audio began loudspeaker design and production using tried and tested methods available at that time - plastic cone materials, fabric dome tweeters and reflex loaded braced cabinets. The speakers were welcomed by enthusiasts both in the UK and throughout the World.

Monitor Audio IA40-3 Discreet Custom Installation Amplifier Specifications
 Number of Output Channels 3
Power (W / Channel) | 4 ohms | 1 kHz  60 W @ 1% THD+N for 2 Channel
40 W @ 1% THD+N for 3 Channel
Power (W / Channel) | 8 ohms | 1 kHz  50 W @ 1% THD+N for 2 Channel
30 W @ 1% THD+N for 3 Channel
Input Impedance  10k Unbalanced
 Output Impedance (Sub/Line Out) 1.47k
Input Sensitivity  ~300 mV - Full Power
 Maximum Input Voltage 2.3 V
 Signal to Noise (SN:R)  > 84 dB Unweighted
Frequency Response (+-0.5dB) @ 1W 10 Hz – 20 kHz
Total Harmonic Distortion THD + N@1 KHz  < 0.05%
Dimensions (Excluding Mounting Brackets and Antenna (H x W x D)) 31.4 x 180 x 110.5 mm (11/4x 71/16x 43/8")
Dimensions (Including Mounting Brackets (H x W x D)) 32.6 x 196 x 182.5 mm (15/16x711/16x 73/16")
Mains Operating Voltage 100-240 VAC, 50/60Hz
Fuse Rating 3 A
Standby Power Consumption < 0.5 W
Weight (Including Amp, RS232 Terminal Block, Speaker Terminal Block and Antenna) 0.484 kg
Bluetooth Yes
Bluetooth Range with Antenna (line of sight) > 20m
Bluetooth Version 4.1
Bluetooth Profiles A2DP, AVRCP
Audio Codec SBC, Apt-X
EQ The EQ dip switches apply a 3 dB boost at 120 Hz, 1500 Hz, and 8 kHz.
Sold As Single Unit


UK Delivery

Providing your item is in stock, the order is usually dispatched within 24 hours. Postage and packing is completely free for orders over £100*. Out of stock items will be dispatched as soon as they become available, which can take between 4 to 21 days      

UK Delivery orders are sent via our couriers' DPD Local on a next-day-delivery service and usually take between 1 and 3 days. 


Local Delivery

Certain manufacturers disallow mail order for their products, however a local delivery may be possible.

We offer a local delivery service for a large number of our products. After your order has been placed, a member of the Hifi Gear team will contact you to arrange a convenient date and time for your local, personal delivery.


Click & Collect

We offer a free ‘Click & Collect’ service on all items. As soon as your order has been completed and is ready for collection a member of our team will be in contact with you. Orders can be collected from our store at 11 King Street, Hereford, HR4 9BW.


Please use this link to find more detailed delivery information or contact us for more details