SKU: 90387482065

Monitor Audio Discreet 3 Channel Installation Amplifier - IA40-3

Sale price$359.55 Regular price$399.50
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Description

Monitor Audio Discreet 3 Channel Installation Amplifier - IA40-3Key Information Number Of Channels: 3 Power (W Channel) @ 4 ohms: 60 W @ 1% THD+N for 2 Channel 40 W @ 1% THD+N for 3 Channel Power (W Channel) @ 8 ohms: 50 W @ 1% THD+N for 2 Channel 30 W @ 1% THD+N for 3 Channel 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

Key Information

  • Number Of Channels: 3
  • Power (W / Channel) @ 4 ohms: 60 W @ 1% THD+N for 2 Channel | 40 W @ 1% THD+N for 3 Channel
  • Power (W / Channel) @ 8 ohms: 50 W @ 1% THD+N for 2 Channel | 30 W @ 1% THD+N for 3 Channel

 

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.

 

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

Dimensions (Including Mounting Brackets (H x W x D)): 32.6 x 196 x 182.5 mm 

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.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 90387482065

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4.5 ★★★★★
Based on 15 reviews
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Verified Purchase
Mimie Hull
Battle Creek, US
★★★★★ 5
Great kids sandals
Size: 9 Toddler, Color: Taupe
These are cute and my kids say they’re comfortable! We got a few colors. Definitely would purchase again. They’ve got good quality.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 18, 2026
J
Verified Purchase
Jenna Smeyne
West Palm Beach, US
★★★★★ 1
Super wide
Size: 13 Little Kid, Color: Taupe
They are oddly very wide. Great for kids with wide chunky feet but for us it was not cute
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Reviewed in the United States on May 18, 2026
K
Verified Purchase
Kindle Customer
Bozeman, US
★★★★★ 2
Nice but runs small
Size: 7 Big Kid, Color: Navy
The sandals are nice and not to hard or flimsy but they are cut very small.
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Reviewed in the United States on April 22, 2026
A
Alexandria Knox
Phoenix, US
★★★★★ 4
Solid Kids Sandals, Overpriced Like Most Kids Shoes 🌞
Size: 11 Little Kid, Color: Brown, Size: 11 Little Kid, Color: Brown
My son hasn’t worn these yet since it’s December in Indiana and sandals + snow obviously don’t mix. 😂 So this review is based on first impressions rather than long term wear. That said, these seem wider than a lot of typical kids’ sandals, which I REALLY appreciate since we tend to have wider feet in our family. #hobbitfeet The quality feels pretty decent overall. They’re described as lightweight, and while they’re not insanely lightweight, they do have enough weight to feel semi-sturdy and not flimsy or cheap. I like the style and color, and I think they’ll work well for my son once warmer weather hits. My main complaint is the price. At just under $24 at the time of this review, it feels a little high for kids’ sandals and for what these are. I really feel like $20 MAX would make more sense. Kids shoes are almost always priced like adult shoes, even though they clearly use less material, and that’s hard for me to understand and wrap my mind around. Overall, these seem solid for daily wear, I just wish the price was a bit more reasonable and affordable.
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Reviewed in the United States on December 31, 2025
J
Job
New York, US
★★★★★ 5
Great basic and timeless design
Size: 12 Little Kid, Color: Brown
These sandals are a great find! They’re super easy to get on and off thanks to the Velcro straps, which is a huge win for little ones learning to be more independent. The fit is adjustable and secure, so they stay in place well during all kinds of play. The cork-style footbed is comfortable and gives good support, and the overall design feels sturdy enough to handle everyday wear. They’re lightweight but still durable, and have held up really well so far. They also have a classic, versatile look that goes with just about everything, perfect for summer outfits. Overall, a reliable, comfortable sandal that’s great for active kids. Would definitely buy again!
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Reviewed in the United States on April 24, 2026

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