TDA7492 Digital Audio Amplifier Board 2x50W

Brand:| Model: TDA7492
This Class D amplifier board produces immense power in a condensed space.
  • Class D amplifie produces 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
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Your Price
Buy 10-up$14.85
Part # 320-606
Qty:  EA
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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 connection 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.

TDA7492 Digital Audio Amplifier Board 2x50W
  • BrandParts Express
  • ModelTDA7492
  • Part Number320-606
  • UPC848864016580
  • Product CategoryAudio Amplifier Boards & Modules
  • Unit of MeasureEA
  • Product Rating
    (7 Reviews)
  • Weight0.1433 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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TDA7492 Digital Audio Amplifier Board 2x50W
TDA7492 Digital Audio Amplifier Board 2x50W is rated 4.0 out of 5 by 7.
Rated 4 out of 5 by from Very good soundI would give it five stars if it had a 3.5mm input. The sound quality is very good and the extra power rocks! I've tried a number of ac adapters and it loves the 15 volt I have from an old iHome clock radio the best.
Date published: 2015-01-19
Rated 3 out of 5 by from Cannot hook up as a mono 100w. amp.Catalog description says it can be used as a 100w. mono amp. This is not possible.. Only as a 2x50w. amp.
Date published: 2014-12-18
Rated 5 out of 5 by from Good bang for your buck!just purchased a few of these little guys, hooked one up to a 140watt 3-way speaker on a single channel and it sounds great!! thanks PE!
Date published: 2014-10-22
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
  • 2015-03-04T06:13CST
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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.
TDA7492 Digital Audio Amplifier Board 2x50W

Where is the power input? Can I wire the Stereo harness to an aux cable?

Asked by: bruce123
A wiring diagram for this amplifier is below. Yes you can wire the harness to a 3.5mm aux connector.www.parts-express.com/pedocs/tech-diagrams/320-606--tda7492-wiring-diagram.pdf
Answered by: MattP
Date published: 2015-02-27

Can this board be powered by a (19v5a?) universal power supply intended for a laptop? Part 120-502 for example. If not, what parts express power supply is advised for acceptable preformance?

Asked by: EDatUpMp
The power supply we recommend for this amplifier is below.http://www.parts-express.com/parts-express-24-vdc-5a-switching-power-supply-with-25-x-55mm-plug--120-055
Answered by: MattP
Date published: 2015-02-18

is there a way of muting the amp, putting it in standby mode and switch selecting the gain settings. The amp looks like the st' eval board. Is any of these options assessable or have they been hard wired?

Asked by: Jim630

I got this along with a pair of "HiVi B3N" (8ohm) and a "50K Audio Taper Stereo Pot" but I couldn't get it to work. I used the pot in the output side and eventually made it go stinky. Do I use pot on input side? Which and how to wire?

Asked by: mdeanda
a pot for volume control would be placed on the input side. Controlling volume on the speaker level side would require an l pad. You will want to use a 50k stereo pot with each input channel wired to one of the joined pots.
Answered by: Chrisf
Date published: 2015-01-19

I had expected a simple diagram for in's and outs. For example, I have an 18 v dc power source, Love to know where to attach it. Phoenix connectors great .... 3....left speaker, right speaker. The chord...Input? Is there a pdf available ?

Asked by: tin man
At the top of the page, to the right of "Product Details" there is the "Manuals & Resources". The first link is the wiring pdf you need.
Answered by: mdeanda
Date published: 2015-01-14

What are the power supply specs if I'm driving 16ohm woofers?  What is the limit on volts? The speakers are vintage, so rated 15 watts.

Asked by: garrardfisher
Recommended power supply: 10V - 26V • Requires 1A - 4AEstimated 25 watts at 16 ohm
Answered by: TomI
Date published: 2015-01-20
  • 2015-03-04T07:37CST
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