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STX Audio STX1200.4D 1200-Watt 4-Channel Class D Bridgeable Amplifier, 75W RMS Per Channel, MOSFET Circuit Design, Adjustable LPF and HPF Filters for Car Audio Systems

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$99.99

$ 39 .99 $39.99

In Stock



Anthony B.
Reviewed in the United States on February 23, 2025
I only turned the gain up about 30% and it was enough to drive an 8" mid and two piezo tweeters for a box that fires through my back seat center console. Having a high pass and low pass filter made it much easier to tune for optimal sound. I've never heard of this brand before, but it has served it's purpose well. The connectors are pretty decent, too! Haven't experienced any clipping which is usually a problem with poorly made amps.
Average Consumer
Reviewed in the United States on January 18, 2025
I am loving all these compact amplifiers. Sure they aren't as dynamic and many have exaggerated power ratings, but they sound pretty darn good and deliver all the power you really need for a daily driver. Why spend more when you can get something like this, stick it just about anywhere and have more than enough volume to cause permanent damage to your ears. Ignore the figures. This is a good littler amp that will driver your door speakers very well and sound good doing it.
Michael T
Reviewed in the United States on January 15, 2025
Lots of power and a small amplifier we use this for our outdoor system. Easy to install works great does not get hot.
That'll Buff Out
Reviewed in the United States on April 1, 2025
Small amp with plenty of power, crossovers help adjusting the sound quality. Works good for small systems when needing that extra power that a radio can’t deliver. Has been working well and sounds great.
Sean
Reviewed in the United States on December 8, 2024
I ordered this for my car to power the rear speakers. It works amazing, the power is great and it is a quality built amp.
Louis White
Reviewed in the United States on December 18, 2024
I needed an amp with a small footprint to power my rear deck speakers. This amp has a great look and build quality. It has more than enough power for me. The sound quality is good and the size is perfect for me. The only thing I'm not a fan of is the connectors you have to use, but I can't complain too much because the sound it delivers makes up for that. Overall, a very nice little amp.
Carlos R.
Reviewed in the United States on November 25, 2024
I recently installed the STX1200.4D amplifier in my car, and I’m thoroughly impressed with its performance! The 1200W max power really brings my audio setup to life with crisp, clear sound, whether I’m listening to music or podcasts. The adjustable filters allow me to fine-tune the bass and treble for a personalized experience. Despite its compact size, it delivers powerful output and remains stable even at high volumes, thanks to its durable design and built-in protection features. It’s the perfect amplifier for anyone looking to enhance their car’s audio without taking up too much space!
Latrice
Reviewed in the United States on November 13, 2024
This 4 channel amplifier has adjustable LPF and HPF filters. The amplifier is very powerful, I got this amplifier to replace my factory amplifier in my1998 Lincoln town car, and it fits just perfect. It's 1200 watts of power and has low bypass and high bypass. This amplifier is very compact and delivers good high quality sounds. The amplifier is durable also easy to setup, its a really good deal for the price. Would make a great gift.
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