2x50W TDA7492 Class-D Amplifier Board

Brand:| Model: AA-AB32174
Product Video
The Class D amplifier topology makes this 2 x 50W amplifier board efficient and consume less space than traditional solid state amplifiers.
  • 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
Part # 
Weight: 0.6 lbs.  
List Price$29.99
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Your Price
Buy 4-up$23.62
Part # 320-301
Qty:  EA
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Product Details

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

2x50W TDA7492 Class-D Amplifier Board
  • BrandParts Express
  • ModelAA-AB32174
  • Part Number320-301
  • UPC844632096679
  • Product CategoryAudio Amplifier Boards & Modules
  • Unit of MeasureEA
  • Product Rating
    (13 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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2x50W TDA7492 Class-D Amplifier Board
2x50W TDA7492 Class-D Amplifier Board is rated 4.6154 out of 5 by 13.
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
Rated 4 out of 5 by from Great AmplifierI bought this because the amplifier in my Altec lansing stopped working. I analyzed a lot before purchase as to which watt will suit my need. The amplifier is very good quality built. I use multiple speakers to play a single source. A volume control for my requirement was must. I assembled all the stuff and used old IBM laptop power supply 16v 3.5A. The sound is great and is exactly what I wanted. Parts express has the best prices. Looking for a nice subwoofer.
Date published: 2013-12-07
  • 2015-03-27T06:31CST
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  • cp_1, bvpage1
  • co_hasreviews, tv_0, tr_13
  • loc_en_US, sid_320-301, PRD, sort_mostRecent
  • clientName_PartsExpressInternational

Product Q&A

Get your questions answered from other customers
who own this product or have experience with it.
If your question requires design or troubleshooting information,
please email tech@parts-expresss.com  for a prompt reply.
2x50W TDA7492 Class-D Amplifier Board

can you run at set of bookshelf speakers that are 4ohm each off this amp using a 24volt 6amp power supply?

Asked by: ericG
Yes that will be fine.
Answered by: MattP
Date published: 2015-02-11

Is there a way to produce mono output at 100W with the 2x50W TDA7492 Class-D Amplifier Board Part # 320-301?

Asked by: LaraCroft
No, this amplifier is not bridgeable.
Answered by: MattP
Date published: 2014-12-31

How would I make a volume control for this amp

Asked by: The Tank
Use a 50K audio taper or logarithmic taper potentiometer between the RCA input jacks on your chassis and the audio inputs of the amplifier board. It does not need to be more complicated than that (this is referred to in some areas as a "passive preamp").
Answered by: DaytonAudio_Rory
Date published: 2014-11-20

Would this amp work with a 14.5 volt 4.5 amp power supply?

Asked by: The Tank
Yes it will work, but in order to get the most from the amplifier a 24VDC 6A power supply is recommended.
Answered by: MattP
Date published: 2014-11-14

Can you use the amp for head phone listenning?

Asked by: sightsound123
This amp would not be the best choice for headphones due to its large amount of output power.
Answered by: MattP
Date published: 2014-10-14

What would be the best recommended power supply, sold here, to use with this amp? 

Asked by: Crisrmz_
I would recommend the power supply below.http://www.parts-express.com/24-vdc-6a-145w-regulated-switching-power-supply--320-314
Answered by: MattP
Date published: 2014-11-14
  • 2015-03-27T06:41CST
  • bvseo_cps, prod_bvqa, vn_cps_3.1.1
  • cp_1, bvpage1
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  • loc_en_US, sid_320-301, PRD, sort_recentQuestionsFirst
  • clientName_PartsExpressInternational


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