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Sure Electronics AA-AB32174 2x50W TDA7492 Class-D Amplifier Board

Brand:|Model: AA-AB32174|Part # 320-301
The Class D amplifier topology makes this 2 x 50W amplifier board efficient and consume less space than traditional solid state amplifiers.
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List Price$29.99
Regular Price$24.90
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Sale Ends2/15/2016
Part # 320-301
  • 2 x 50W Class D amplifier
  • Small footprint for space limited applications
  • Built-in cooling fan, pop noise suppression, and over-temp protection circuit
  • 14 to 27 VDC power supply required

Product Details

Sure Electronics AA-AB32174 2x50W TDA7492 Class-D Amplifier Board

This amplifier board features a state-of-the-art, dual channel Class-D TDA7492 IC, which delivers up to 50 watts per channel. The small 3.6" wide by 4.8" long footprint allows this amplifier board to be used in many applications were size constraints limit the use of conventional amplifiers. Just add a 14 to 27 VDC power supply, signal source, and speakers!

A low noise cooling fan is mounted atop the robust heatsink to maximize heat dissipation. Thermal protection is also included to extend the longevity of the amplifier board. Four fixed gain settings are available to allow for volume control at the source, and stereo RCA line-level inputs are pre-attached. Mounting holes are provided as is a 2.5 mm x 5.5 mm power jack for quick connection. Screw-down phoenix-type terminals are included for quick speaker wire connection.

• Class D amplifier topology featuring TDA7492 amplifier IC
• Heatsink with attached fan
• Pre-drilled mounting holes
• Over-temperature protection circuit
• Click and pop noise suppression
• Phoenix-type speaker terminals
• Line-level RCA input

• Power output (w/ 24 VDC power supply): 50W x 2 (6 ohms, THD 10%), 40W x 2 (8 ohms, THD 10%), 25W x 2 (6 ohms, THD 0.05%), 20W x 2 (8 ohms, THD 0.1%)
• Frequency response: 20 to 20,000 Hz (±3 dB)
• Minimum impedance: 4 ohms
• Recommended power supply: 14 to 27 VDC, 6A regulated
• Fixed gain settings: 25.6 dB, 31.6 dB, 35.1 dB, 37.6 dB
• Power input jack: 2.5 x 5.5 mm, center-positive
• Dimensions: 4.8" L x 3.6" W x 1.4" H

Sure Electronics AA-AB32174 2x50W TDA7492 Class-D Amplifier Board
  • BrandSure Electronics
  • ModelAA-AB32174
  • Part Number320-301
  • UPC844632096679
  • Product CategoryAudio Amplifier Boards & Modules
  • Unit of MeasureEA
  • Product Rating
    (14 Reviews)
  • Weight0.6 lbs.
  • California Prop 65

    Warning: California residents only. Please note per Proposition 65 that this product may contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.

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Sure Electronics AA-AB32174 2x50W TDA7492 Class-D Amplifier Board
Sure Electronics AA-AB32174 2x50W TDA7492 Class-D Amplifier Board is rated 4.3571 out of 5 by 14.
Rated 1 out of 5 by from Poor sound quality, unreliableThis amp hissed badly, even after attempts to filter out any ground loop contamination. It stopped functioning completely after only a week.
Date published: 2015-09-22
Rated 5 out of 5 by from Plenty of juice for my bookshelf speakersI've got this amp running a pair of 4 ohm bookshelf speakers and it works great. I've monitored the temperature and it barely gets warm after a couple hours of playback at moderate volume. One thing to note is that the fan will continue to run even when if the amp is put into standby mode.
Date published: 2015-03-03
Rated 5 out of 5 by from Works just fine!Arrived sooner than I expected. Using it to power external speakers for my new flat screen TV. Put a 100k pot between amp and TV for safety. Powering it with a 20 volt 4.5 amp laptop power brick. Amp and brick housed in a plastic project box with a lot of holes drilled in for vents. Sounds just great. I wouldn't hesitate to buy another. And the price can't be beat.
Date published: 2015-02-24
Rated 5 out of 5 by from Small but powerfulI purchased this amp for a custom portable speaker install. It works great and is very easy to wire. Sound is very clear. Just hook up power, RCA inputs, and a speaker. Will work with any source with RCA outputs (ie. 3.5mm to RCA headphone wire, DVD player, etc.)
Date published: 2014-09-24
Rated 5 out of 5 by from Great board and featuresMet all expectations, a nice little amplifier board. I have not been able to test for actual output but so far it is not lacking.
Date published: 2014-06-18
Rated 3 out of 5 by from stoped workingIt was a great amp. I had it for about a year and it just stopped working one day. Cant seem to figure out whats wrong with it. This is the second amp that stopped working that i bought from this site.
Date published: 2014-04-30
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Product Q&A

Get your questions answered from other customers
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Sure Electronics AA-AB32174 2x50W TDA7492 Class-D Amplifier Board

New DIYer here.   Is this amp compatible with 2x25W 8ohm speakers --- PE Overnight Sensations?  Not sure which amp is best off the PE website given the ohm mismatch.  

Asked by: downerz23
This amp would have no problem driving that speaker at all. It is an excellent match for this application.
Answered by: Chrisf
Date published: 2016-02-05

Since the recommended power supply to this amp is out of stock, the Sure Electronics PS-SP11115, and I cannot wait for it to restock, what power supply do you recommend to this amp?  

Asked by: 2ndBear
The power supply below will also work for this amplifier.
Answered by: MattP
Date published: 2016-01-14

Hi. I want to use this amp to power a pair of bookshelves using the HP-5210 5-1/4" woofer and the Vifa XT25SC90-04 Ring Radiator Tweeter. Is the power appropriate? Any other unforseen problems? Thanks

Asked by: PeterHunt

I am going to build a little hifi system but wanted to run it in a sealed walnut box.  Would this work or would i be better off getting the other 50x2 that doesnt have a fan?

Asked by: mattghfjhfkjhv
Either option will require venting to help dissipate heat.
Answered by: MattP
Date published: 2016-01-14

Hi guys can i use this class-d amp with the recomended power power a Dayton Audio B652?

Asked by: Ej32
Answered by: MattP
Date published: 2015-10-08

How do I add a volume control knob to this board?

Asked by: Myronus101709
Gotta disagree with MattW on this.Putting a pot on the outputs would quickly destroy the pot and possibly be harmful to the amp, itself. AnL-pad, which is designed for controlling speaker volume would theoretically work when connected to the output stage, but controlling the amp output is more appropriately accomplished by using a pot at the amp INPUT.
Answered by: cbrillow
Date published: 2015-08-27
  • 2016-02-13T07:29CST
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