3 channel TV optical dolby amplifier with Bluetooth – Monitor Audio IA40-3


In stock

For Stereo or Left, Center & Right channels from a TV optical output. Built in Dolby for clear dialogue, great for TV, Films and music.

In stock


Monitor Audio IA40-3 Installation Amplifier

The discreet IA40-3 is a highly versatile amplifier featuring digital, analogue and Bluetooth® inputs. Designed for easy installation, the bespoke fixings allow it to be positioned in multiple locations: on a wall, cabinet, stand or behind a television.

Ideal for smaller environments, the IA40-3 Installation Amplifier will perfectly power in-ceiling speakers in a kitchen, loft room or bedroom. It also works beautifully when paired with Monitor Audio smaller bookshelf speakers 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.

Technical 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 (15/16×711/16x 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

Additional information


Monitor Audio



Amplifier Connectivity

Bluetooth, Optical, Aux-In

Product Type

Stereo Amplifier

You may also like…

  • Out of stock

    Monitor Audio W150-LCR In-Wall

    The 2-way W150-LCR in-wall model with 5-inch drivers features Monitor Audio's MMP II cones coupled with a pivoting version of our C-CAM Gold Dome tweeter.
    Add to cart Details
  • Out of stock

    Monitor Audio Bronze 50 Bookshelf Speakers

    The smallest speaker in the Bronze Series houses our renowned C-CAM mid-bass driver and C-CAM Gold dome tweeter to ensure powerful and detailed audio reproduction.


Go to Top