New Product

TDA7492 Digital Audio Amplifier Board 2x50W

Brand:| Model: TDA7492
This class D amplifier board produces immense power in a condensed space.
  • 2 x 50 watt @ 8 Ohms
  • Mono BTL power 100 watt @ 4 Ohms
  • Phoenix connectors for easy speaker hook up
  • 12" stereo wiring harness included
  • Short-circuit and over-temperature protection
  • STMicroelectronics TDA7492 chip is priced low but has big power
  • Four model GAIN parts can auto work on different voltages
Part # 
Weight: 0.1433 lbs.  
List Price$24.99
You Save33%
Your Price
Buy 10-up$14.85
Part # 320-606
Qty:  EA
Available Payment Methods

Product Details

TDA7492 Digital Audio Amplifier Board 2x50W

Originally designed for high-end televisions, this tiny amp board delivers 50 watts into two channels, or an impressive 100 watts into a single channel. Use this class D amplifier in DIY projects where high power is needed in a limited space.

The board includes a massive heat sink, and three dual-terminal phoenix connectors for easy termination of speaker lines. Included in the box is a 12" stereo input lead, making hook up a breeze. Depending on the voltage powering the unit, you will need 1A to 4A of current.

Note: When the speaker impedance is 4 ohms, the operating voltage must be less than 18V. When the speaker impedance is 6 ohms, the operating voltage can not exceed 24V. When the speaker impedance is 8 ohms, the working voltage can not exceed 26V.

Specifications: Power handling: 2 x 50 watts @ 8 Ohms, 1 x 100 watts @ 4 Ohms • Minimum impedance: 4 Ohms • THD: 0.1% @ 8 Ohms @ 1 watt • Recommended power supply: 10V - 26V • Requires 1A - 4A • Stereo wiring harness included • Dimensions: 2-3/4" L x 2-5/16" W x 7/8" H.

Product Specifications
  • Special FeaturesBoard Only Module
TDA7492 Digital Audio Amplifier Board 2x50W
  • BrandParts Express
  • ModelTDA7492
  • Part Number320-606
  • UPC848864016580
  • Product CategoryHome Audio Amplifiers
  • Unit of MeasureEA
  • Product Rating
    (4 Reviews)
  • Weight0.1433 lbs.
  • California Prop 65

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

Similar Products

View similar products to the TDA7492 Digital Audio Amplifier Board 2x50W
in the Home Audio Amplifiers product category.


TDA7492 Digital Audio Amplifier Board 2x50W
TDA7492 Digital Audio Amplifier Board 2x50W is rated 4.0 out of 5 by 4.
Rated 4 out of 5 by from Nice Little Amp, more like 35W/channel into 8ohmsI was surprised at how small this amp is. That said, it is not able to deliver 50W/channel into 8ohm. Figured I would offer a bit more info for others looking at this amp:35W/channel into 8ohm from a 24V supply.47W/channel into 6ohm from a 24V supply.50W/channel into 4ohm from a 20V supply.If driving into 4ohm loads, make sure to use a supply voltage under 20V!The output filter is optimized for 6ohm loads.Gain is set to 33.6dB.Inputs are single-ended, not differential as shown in the schematic. Make sure your source ground/return is good.Check the heatsink screws: I received 2 of these, first one was over-torqued, bowing the PCB, Second was uneven with the heatsink tilted and barely touching the chip. Easy enough to correct. Put some thermal grease in there if you have it.While not quite as advertised, this is not a bad little amp.
Date published: 2014-07-21
Rated 3 out of 5 by from could be goodused with a 12V 2A supply, audio starts distorting much sooner than i would have thought. not getting anywhere near 25W before low end starts getting clipped. just ordered a 12V 5A supply, hopefully will provide enough power to prevent distortion.
Date published: 2014-07-05
Rated 4 out of 5 by from Great valueGreat little power amp.! Be careful with P.S. do not over power it . I blew one on 40volts I bought another . My mistake.
Date published: 2014-07-02
Rated 5 out of 5 by from awesome! Really powerful.These deceivingly small boards have become my go to boards for a wide-wide range of pro audio situations and products. They rock! And are extreamly flexable power supply wise.most of the time I use the parts express smps 120-055 24 volt but, they work just fine off of theyre 12 volt 5000ma smps as well. Great desighn all the way around.
Date published: 2014-06-06

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  for a prompt reply.
TDA7492 Digital Audio Amplifier Board 2x50W

Where in the circuits would you wire in a potentiometer?  Input/Output? Also, are there any reliable places, either here or elsewhere on the web to review how the wiring of one is to be done?

Asked by: Seamas

How do I hook up a female auxiliary 3.5mm cord to this amp? Also, what does the plug with the three wires do? 

Asked by: Jackie19888
The three wire cable is for the auxiliary input on this amplifier. The black is ground, the white is left channel and the red is right channel.
Answered by: MattP
Date published: 2014-10-16

From the schematic, I can not tell how to bridge this amplifier. Any help would be appreciated. Forgive me if it was already posted above and I didn't catch it.

Asked by: RobSchwiebert
In order to bridge this amplifier you have to combine the inputs and parallel the outputs, basically wiring the output positives together as well as the negatives, then run this singular output into the speaker.
Answered by: MattP
Date published: 2014-10-18

please explain to me how to hook up the channels, mono and two channel? also, what are the 3 wires and plug for? (red, black, white) wires 

Asked by: jason12

Do you have a suggestion for a power switch (on/off) that would be appropriate for this amp?

Asked by: frenchman111
You can switch off the DC voltage with a rocker switch like the 060-302
Answered by: TomI
Date published: 2014-10-09

I'm wondering what the limitation is for running into 4ohms at 24 volts. I picked up a great 24 switching supply ( from Parts Express. Would be nice to use it, but

Asked by: tbrucebowers

Customer Projects

Customer projects that include: TDA7492 Digital Audio Amplifier Board 2x50W

If you built a project using this product, post it in the Parts Express Project Gallery.

Customer Discussions

If you would like to start a discussion about this product, post a thread in the TechTalk Customer Forum.

Recently Viewed Products

Get Deals
emailed to you every week.

Be the first to hear about new and exciting products,special pricing and incredible deals!

See This Week's "GET DEALS" Email
Parts Express
725 Pleasant Valley Dr.Springboro,OH45066USA

© 1996-2014 Parts Express, All Rights Reserved