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Facmogu ST-838 2.1CH Audio Power Amplifier, RMS 20Wx2+40W Class D Stereo Digital Audio Amp with Subwoofer Output, 80W Mini Subwoofer Amplifier Audio Stereo Bass Amp with DC12V Power Adapter - Silver

  • Based on 300 reviews
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Availability: In Stock.
Fulfilled by Amazon

Arrives Monday, May 20
Order within 20 hours and 20 minutes
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Color: Silver


Features

  • Mini Size but Powerful-- Don't be fooled by its size, itll give your entertainment system a serious boost. With 2.1 channel output RMS 20W2(L/R)+40W(subwoofer), which can drive most home/car/marine/outdoor passive speakers and subwoofers, and with excellent sound. Low distortion, acoustically accurate reproduction of music, which sounds smooth and full.
  • Bass & Treble & Sub Vol Control-- Designed with main volume, treble and bass control knobs, Which for more delicate adjustment of the sound, much fun and high playability. Besides main volume, treble and bass control, sub volume control is specially designed. They allow you to control the volume of passive Subwoofer and two passive speakers separately as you wish.
  • RCA & AUX Inputs-- With standard stereo RCA and 3.5mm AUX inputs, can be compatible with various devices, such as mobile phone, MP3, MP4, CD player, TV, computer etc. Just enjoy your music the way you want to. Besides, there's a little blue woofer alert that turns on when the woofer is beating.
  • Portable & Convenient-- Mini Size: 5.9x3.6x1.4" / 15x9.1x3.7cm, amplifier weight: 0.66 pounds/ 0.3kg. Compact design with exquisite appearance, matt silver case looks fashionable and durable, unique structure design easy to be installed in car, marine, RV, golf cart or home, which save space and convenient to operate.

Voltage: 12 Volts


Manufacturer: Mo-gu


Brand: Facmogu


Number of Channels: 2


Package Dimensions: 9.21 x 6.77 x 2.52 inches


Item Weight: 1.1 pounds


Item model number: A18224-MG-US


Date First Available: October 14, 2020


Manufacturer: Mo-gu


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, May 20

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews


  • Great Sound Quality
Color: Black
This small amplifier sounds great. I've only had this amp about a week and so far so good. I'm running out of my iMac into the 1/8 AUX input jack on the front of this amp and using heavy gauge speaker cable into a pair of speakers, each w/ a 6.5 inch midrange and 3 inch tweeter, housed in 45 year old heavy, solid wood cabinets. The bass and treble controls on this ST-838 are really quite responsive, although I am also using the EQ in my iTunes player to dial things in a little more, especially when listening to music. I have a background as a sound engineer and musician and I am fairly hard to please and so far I'm pretty happy, particularly considering the price. And now ~ the test of time. Stay tuned. ... show more
Reviewed in the United States on September 14, 2023 by RCM

  • Pump It Up
Color: Black
This worked great, really made the sound from my cheap stereo sound like an expensive stereo.
Reviewed in the United States on October 27, 2023 by Mr. Know It All 😁 Mr. Know It All 😁

  • Surprising Little Wonder
Color: Silver
For the price? man, you can't ask for more, this little one does the job, assuming you have the needed speakers and tweeters For me, It powered the 10-inch SUB very well, the quality and the features are surprisingly good, and very nice sound. You CAN'T expect it to drive a 500 watts SUB or so, this is not a powerhouse amp, it is just good for the home-based SUB ... show more
Reviewed in the United States on November 30, 2023 by Edgar Ceballos

  • TOTAL JUNK. DO NOT BELIEVE THE POSITIVE REVIEWS!!!!!!
Color: Silver
I purchased this amp to upgrade the audio in my Ninja Turtles arcade cabinet. If you are looking for just loud audio this will kinda do that. What this amp does NOT do is provide clean audio. I have 2 kenwood 4inch 2way speakers and an 8 inch subwoofer hooked up. The high a super screechy. The lows a practically non existent. The subwoofer output is nothing more that a mono channel. No crossover is applied to the sub. The bass and treble adjustment knobs just add noise to the sound. The unit do not achieve the advertised wattage per channel. Spend some extra money and get a good amp. Avoid this cheap junk. I will be retuning that asap! ... show more
Reviewed in the United States on November 23, 2022 by Steven

  • Resurrected a lame Logitech z533 setup. Of course, time will tell...
Color: Silver
I have a Logitech z533 setup at my pc desk which apparently blew a cap that has disabled the subwoofer. Naturally this happened just outside the product's 1 year warranty. Most of the power delivery electronics are inside the subwoofer, out of reasonable reach without destroying the subwoofer case (which is glued together MDF.) Even if I could get to the electronics, I don't necessarily have the know-how to go through and suss out and replace the capacitor. That doesn't mean I'm going to just go out and drop another $150 on another z533 setup. Especially when I consider this is the third and final Logitech speaker setup to have a lame electronics-based failure that I've had to clean up after. (I also still have an old z506 setup with a faulty power switch I had to fix myself...) I knew the speakers themselves were still good, so I decided to give this amp a try as it has very similar output properties to the original amp. Cut and extend the wires from the sub speaker, plug them into the new amp. Cut the phono plugs off the left and right channel speakers, stripped those wires back a bit, and plugged them into the spring clip terminals on the Facmogu. Plugged in my laptop for a sound source, and I was done. If the speakers sound different than they did with the Logitech electronics onboard, I honestly cannot tell. Your mileage may vary. Yes, I've lost use of the little control puck thing, but that thing kinda sucked anyway. I cut it off. The question is: will this amp last? If it doesn't, I will edit this review to reflect that. ... show more
Reviewed in the United States on September 19, 2023 by Chris

  • Not loud as it should be
Color: Silver
Does not put out much volume for a unit of it's rating.Verry Mushy sub-bass tones.Ok for most users but picky audiophiles would hate it!
Reviewed in the United States on March 18, 2023 by Wesley N.

  • Pequeño pero sorprendente
Color: Black
Este pequeño amplificador no es muy potente en cuanto a volumen, pero lo que me llamó la atención fue el nivel de los graves (subwoofer). Es relativamente impresionante. La calidad del sonido es buena hasta que le subes todo el volumen. Empieza a escucharse un tanto sucio pero debe ser por la fuente que no da para más. Me gusta que tiene los controles individuales de bass, treble y subwoofer. La instalación es muy sencilla. No tiene puerto USB ni para microSD y tampoco trae bluetooth. Para encontrar estas características debes invertir un poco más. ... show more
Reviewed in the United States on November 13, 2023 by Ruben Morales

  • worked great. when it worked
Color: Silver
Purchased April 9, 2023. Worked great until Nov. 22, 2023 when it quit working. Now all I get is popping sound every second. Just sits there going pop, pop, pop.....
Reviewed in the United States on November 23, 2023 by Theron LeClerc

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