SpecificationsNumber of Output Channels:
Power (W / Channel) | 4 ohms | 1 kHz
60W @ 1% THD+N for 2 Channel
40W @ 1% THD+N for 3 Channel
Power (W / Channel) | 8 ohms | 1 kHz
50W @ 1% THD+N for 2 Channel
30W @ 1% THD+N for 3 Channel
Output Impedance (Sub/Line Out)
~300 mV - Full Power
Maximum Input Voltage
Signal to Noise (SN:R)
> 84 dB Unweighted
Frequency Response (+-0.5dB) @ 1W
10 Hz - 20 kHz
Total Harmonic Distortion THD + N@1 KHz
Mains Operating Voltage
100-240 VAC, 50/60Hz
Standby Power Consumption
Bluetooth Range with Antenna (line of sight)
DimensionsExcluding Mounting Brackets and Antenna (H x W x D)
31.4 x 180 x 110.5 mm (11/4x 71/16x 43/8")
Including Mounting Brackets (H x W x D)
32.6 x 196 x 182.5 mm (15/16x711/16x 73/16")
Weight (Including Amp, RS232 Terminal Block, Speaker Terminal Block and Antenna)
Monitor Audio IA40-3 Installation Amplifier is ideal for smaller environments. It will perfectly power in-ceiling or in-wall speakers in a kitchen, loft room or bedroom. It also works beautifully when paired with Monitor Audio smaller bookshelf speakers for example in a bedroom, study or sitting room.
Best of all, if there is a television in the setup, the IA40-3 can be mounted behind the screen – using the supplied bespoke bracket – to drive a Monitor Audio Passive Soundbar. (The customisable brackets can be bent to fit and have flexible break-off sections for maximum installation versatility.)
With 40 W of power over three channels at 4 ohms, or 60 W over two channels, the IA40-3 will drive speakers or passive soundbars to deliver a lively and precise sound.
If extra bass is required, an active subwoofer can be connected to the IA40-3 via the sub/line out. Whatever the audio source, this is an amplifier with all the right connections. The IA40-3 features optical and analogue inputs and the latest Bluetooth® wireless technology, powered by Qualcomm® aptXTM Audio, to allow easy and superior pairing with mobile devices. The IA40-3 has been designed to be discreetly tucked away and its unique heatsink fin allows cooling in the tightest of spaces.
Designed for modern living, the IA40-3 is Monitor Audio’s versatile solution when superior sound is required in custom install projects.
Monitor Audio Warranty:
Monitor Audio Installation Amplifiers carry a 5 Year Warranty
We are authorised Monitor Audio retailers. Brand new and complete with the full warranty.
Monitor Audio IA40-3 Installation Amplifier Product review