SKU: 67230376201

Cloud USA MA40 40W Mini Amplifier for Audio and AV Installations

Sale price$24579.00 Regular price$27310.00
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Description

Cloud USA MA40 40W Mini Amplifier for Audio and AV Installations40W Amp for AV & Audio Installations Museums Exhibits, Transportation & More Compact at 8. 7 x 1. 6 x 5. 7" 2 x Line Inputs & x 1 Mic Input Internal Line Summing, Mono Operation Screw Terminal Connections Selectable Mic over Line Priority Selectable Line 1 over Line 2 Priority Low & High Frequency EQ Energy Efficient The Cloud MA40 is a mono amplifier for use in AV systems and installations with an audio component. At 8. 7 x 1. 6 x 5. 7", it is

  • 40W Amp for AV & Audio Installations
  • Museums Exhibits, Transportation & More
  • Compact at 8.7 x 1.6 x 5.7"
  • 2 x Line Inputs & x 1 Mic Input
  • Internal Line Summing, Mono Operation
  • Screw Terminal Connections
  • Selectable Mic-over-Line Priority
  • Selectable Line 1-over-Line 2 Priority
  • Low- & High-Frequency EQ
  • Energy Efficient

The Cloud MA40 is a mono amplifier for use in AV systems and installations with an audio component. At 8.7 x 1.6 x 5.7", it is compact enough to fit into a wall or ceiling mount, or to be placed conveniently next to projectors, displays, and loudspeakers. As such, it is suitable for gallery/museum exhibitions and tour-guide systems. It can also work with digital signage systems, providing a vast improvement over the audio typically found in such devices. The amplifier handles 40W into a 4-Ohm load, though it can also operate with 12 to 24 VDC power supplies, making the MA40 suitable for installations where an AC mains power supply isn�t on hand�places such as trams, river-boats, and buses.

The amplifier itself can mix a balanced microphone input with two unbalanced stereo connections, summing the stereo inputs to mono internally and outputting them via the music channel, leaving the microphone channel for the balanced mic input. A music mute input is also provided, which can be hooked into an emergency system and permits compliance with local Fire Authority regulations; when the music mute is instantiated, the microphone input remains active, and a front panel MUTE LED illuminates. The inputs and outputs provided are all plug-in screw terminal connections, and can be controlled via separately-available remotes.  

Rear-panel DIP switches allow you to set various priorities, such as Line 1 over Line 2, or Mic over Line. Configured in this way, you can connect message stores, or cause the music channel to automatically attenuate whenever microphone signal is present; this comes in handy for announcements. For microphones requiring 12V phantom power, an internal jumper is available.

On the front panel, you�ll note controls for Mic, Line 1, and Line 2 levels, as well as low-frequency and high-frequency controls for the music channel to better accommodate the acoustics of your given space. On the rear of the unit, you�ll see that the line inputs have a preset control for gain, while the mic input sports preset gain, low-frequency, and high-frequency EQ controls. An energy efficient amplifier, the MA40 features a user-selectable power-down function which automatically puts the unit into a low-current standby mode when it ceases to receive signal after a predetermined amount of time.

Key Features at a Glance
40W power amplifier

Compact module for install-and-forget situations

2 unbalanced stereo line inputs with individual sensitivity trims

Electronically-balanced mic input with separate gain control

Phantom power selectable by internal jumper

Front-panel control of music level and mic levels

Front-panel HF and LF EQ adjustments for music sources

Rear-panel HF and LF EQ adjustment for mic input

Selectable MIC-over-LINE priority

Selectable LINE 1-over-LINE 2 priority

Optional EQ cards available to suit various popular installation loudspeakers

Remote level control port; compatible with Cloud RL Series plates

Music mute input; selectable N/O or N/C

Automatic power-down function (user-selectable)

Less than 1W power consumption in sleep mode

Convection cooled

Silent in operation

PSU meets US DoE Level VI energy requirements

Operates from 100 to 240 VAC

Universal AC adapter included

In the Box
Cloud USA MA40 40W Mini Amplifier for Audio and AV Installations
  • Power Adapter
  • Limited 5-Year Warranty
Line Inputs
Frequency Response 20 Hz to 20 kHz at ±1 dB
Distortion < 0.1 %
Sensitivity -12 dBu to +8 dBu
Input Gain Control 20 dB range
Input Impedance 10 kOhms (unbalanced)
Headroom > 12 dB
Noise < -90 dB
EQ Frequency Bands (Fixed) LF: ±10 dB at 50 Hz
HF: ±10 dB at 10 kHz
Microphone Inputs
Frequency Response -3 dB at 120 Hz (filter) to 20 kHz ±1 dB
Distortion < 0.1%
Gain 10 to 50 dB
Input Impedance > 2 kOhms (balanced)
Headroom > 12 dB
Noise < -90 dB
Phantom Power +12 V (internal jumper)
Output
Output Power 40 W, DC input > 18 V (1 kHz continuous sine wave)
General
I/O Screw terminal connections
Power Input 12 to 24 VDC (External 24 Volts AC adapter supplied)
Power Consumption 47 W
PSU External, Universal-type, 100 to 240 VAC, 47 to 63 Hz
Amplifier Protection Fixed level signal limiter; protection against DC, PSU overcurrent, amplifier overcurrent, over-temperature, supply voltage under/over-voltage; resettable internal breaker (no fuses).
Dimensions (W x H x D) 8.7 x 1.6 x 5.7" / 22.0 x 4.1 x 14.5 cm
Weight 26.5 oz / 750.0 g
All product and company names are trademarks™ or registered® trademarks of their respective holders. Use of them does not imply any affiliation with or endorsement by them.
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: 67230376201

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Rudy H
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★★★★★ 5
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Size: 11, Color: Optic White/Optic White
Great looking pair of shoes very comfortable and stylish. Recommend them highly
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Reviewed in the United States on February 18, 2026
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Jimmy
Whiting, US
★★★★★ 5
Takes a Licking and Keeps on Ticking
Color: Green/Black
I love this watch despite the fact that it is really a toy. I love the look of the watch, I love how lite the weight of the watch is on my wrist, and it really does keep good time if you manage the solar charge properly. Other than looking cool on your wrist, this watch has absolutely no functions other than time keeping. The black plastic bezel is molded into the case and does not turn, so don't plan on using that. The watch has no light, the dial numbers are non-luminous and the hands are very limited in terms of luminosity. No buttons. All you can do is adjust the time and date by pulling out what used to be a winding stem in the good old days. The small tag on the strap with Geographic coordinates shown on it indicate the location of the old Timex manufacturing facility (SW of Waterbury, CT). I have a nice ledge at my bedroom window and it gets good western sun for a good part of the day regardless of the time of year. On this ledge you will find a half dozen solar powered watches (mostly Casio) properly aligned to maximize the charge they may receive each day. Note that the description for this Timex watch specifically states that a lightbulb won't charge this watch. You need direct sunlight for several hours if you want to get more than a 3-week charge into this watch. So, I'll leave you with a couple of tips, my friends; 1.) If you are looking for a first watch to give your outdoorsy oriented Son or Daughter, then give them this one. Why? Because it is cool looking, fairly well built, and it actually works, 2.) After you receive your Timex watch, be sure to keep the display mount it is packaged with. It makes a great fixture to mount your watch on for charging and allows you to maximize the position of the solar cells on the dial so that you can optimize charging time. Have Fun! Jimmy
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Reviewed in the United States on February 28, 2026
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Nuka Shroom Soup
Fort Morgan, US
★★★★★ 5
Excellent value, flawless performance for well over a year and no signs of quitting.
Color: Green/Black
Excellent value, had this for well over a year and it still keeps perfect time, still water resistant. No worries about having to change batteries. Owned a fancy expensive (battery) watch once and the dept. store repair intentionally sabotaged the watch in the hopes I would purchase another from them. Yeah, good luck with that, lost my business forever. This is the 21st century, cell phones are the new time pieces, but solar is totally reliable and Timex makes it happen. Holds a charge for many months, although I prop it in a bright window for a few days every few months or so just to make sure the cells are always fully charged, although it's probably unnecessary, just being over cautious. I haven't actually experienced this watch ever running out of power even after months of use. Damn impressive, as it should be.
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Reviewed in the United States on October 12, 2025
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Bill
Massapequa, US
★★★★★ 4
Good value for solar watch
Color: Black/Orange
Nice watch! It is plastic like but it is solar. No indiglo button only a little luminous on the hands so you don't want to wear it in tje dark and expect to check the time. 45mm case is good size for my wrist and the band works good also, Not too long not too short. Overall a good watch with no problems
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Reviewed in the United States on May 6, 2026
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Barry Vercueil
Houston, US
★★★★★ 5
Amazing Solar for the price
Color: Black/Orange, Color: Black/Orange
Great watch. Very good visibility. Ligh and feels quality. Easy to swap straps. Same size as my Casio Duro. Highly recommend.
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Reviewed in the United States on April 30, 2026

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