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Monitor Audio IA40-3 Installation Amplifier The Monitor Audio IA40-3 is a compact, versatile installation amplifier designed for seamless integration in smaller spaces. It offers digital, analogue, and Bluetooth® inputs, delivering clear, precise sound for in-ceiling speakers, passive soundbars, and bookshelf speakers. Key Features 40 W power over three channels at 4 ohms, or 60 W over two channels Supports optical, analogue, and Bluetooth® inputs with Qualcomm® aptX™ Audio for superior wireless streaming Customisable mounting brackets for flexible installation on walls, cabinets, stands, or behind televisions Sub/line out for connecting an active subwoofer to enhance bass response Compact design with unique heatsink fins for efficient cooling in tight spaces Bluetooth® 4.1 with A2DP and AVRCP profiles, supporting SBC and Apt-X audio codecs Product Description Ideal for kitchens, loft rooms, bedrooms, or studies, the IA40-3 powers in-ceiling speakers or pairs perfectly with Monitor Audio’s smaller bookshelf speakers. Its bespoke fixings allow discreet mounting behind a television, driving a Monitor Audio Passive Soundbar with ease. The adjustable mounting brackets feature bendable and break-off sections to suit various installation needs. With multiple input options including optical and analogue, plus Bluetooth wireless connectivity powered by Qualcomm® aptX™ Audio, the IA40-3 ensures easy and high-quality pairing with mobile devices. An active subwoofer can be connected via the sub/line output for enhanced bass response. Designed for modern living and custom install projects, the IA40-3 offers a compact, powerful, and flexible solution for superior sound quality. Specifications Number of Output Channels: 3 Power (W / Channel) | 4 ohms | 1 kHz: 60 W @ 1% THD+N for 2 channels, 40 W @ 1% THD+N for 3 channels Power (W / Channel) | 8 ohms | 1 kHz: 50 W @ 1% THD+N for 2 channels, 30 W @ 1% THD+N for 3 channels 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 Ratio (SNR): > 84 dB Unweighted Frequency Response (+-0.5dB) @ 1W: 10 Hz – 20 kHz Total Harmonic Distortion (THD + N) @ 1 kHz: Dimensions (Excluding Mounting Brackets and Antenna): 31.4 x 180 x 110.5 mm (1¼ x 7⅟₁₆ x 4³⁄₈ inches) Dimensions (Including Mounting Brackets): 32.6 x 196 x 182.5 mm (1⁵⁄₁₆ x 7¹¹⁄₁₆ x 7³⁄₁₆ inches) Mains Operating Voltage: 100-240 VAC, 50/60Hz Fuse Rating: 3 A Standby Power Consumption: Weight (Including Amp, RS232 Terminal Block, Speaker Terminal Block and Antenna): 0.484 kg Bluetooth: Yes Bluetooth Range (line of sight): > 20 m Bluetooth Version: 4.1 Bluetooth Profiles: A2DP, AVRCP Audio Codec: SBC, Apt-X EQ: Dip switches apply a 3 dB boost at 120 Hz, 1500 Hz, and 8 kHz Sold As: Single Unit