S350HS TPA3251 Bluetooth Power Amplifier Board with Subwoofer 2.1 Channel 220W×2+350W, 12V-38V Audio Power Amplifier Module with Treble and Bass Control,Black (S350HS)

I've bought many amplifier boards for various projects. Dajunguo is by far the best quality. This would be my second purchase of this specific model. Pros: Fan included, knobs are nice. Simple hookup. Bluetooth range is incredible. no noticeable noise or chittering. best of all, the auto mute that most of these have to hide the feedback is turned off so your music isn't cutting out at a break point. Cons: none really. it would be nice if you could remove the face plate for better mounting options.

I am totally blown away that something so small can put out so much sound. I have purchased several of these in various sizes for my projects. In my experience with amps i have never seen anything like these. They can plug into accessory plugs in car and the supply cord don't even get warm. Amazing. Anything compatible so far would have to have a supply wire the size of little finger and still get hot. Easy to install and top value for the money. Get a handful of them, you'll find a use for them. They can fit in multiple places because of the compact size and light weight. Controls are easily accessible and sub control is convenient.

This is a very clean-sounding, capable amplifier. I'm impressed with the amount of power it can handle, and all the features that come with it for about one-third to one-half the cost of a commercially available amp with similar features. It's goo, but there are some things that are not included that would make it great. Pros * Good, clean power. Very low noise, unless you introduce it yourself from a ground loop or similar power issue. * Takes a wide-range of input power. I started using a Lenovo laptop 19v 5 amp, and then bought a new 36v 5 amp. For my setup, there was practically no difference. * Separate controls/output for subwoofers. This jacks the price in the commercial options to the $150+ category. * Lots of input options, although I think most will use the 3.5 mm audio cable or Bluetooth. * Customizable - if you have a 3D printer, you can make it look like anything you want. Cons * Big "pop" sounds when you turn it on or off. No power on/power off protection/relay to overcome the big capacitor discharges. You can fix this with a $13 board off Amazon (https://www.amazon.com/dp/B0DP9CLBMF?ref=ppx_yo2ov_dt_b_fed_asin_title), but it's an extra cost with extra skill most might not want to take on to play their music. * No high-def audio codecs with Bluetooth. The app is pretty cool, though, if you want a custom name for your Bluetooth connection. I'm using it to drive my home entertainment center, from TV to DVD to PC and streaming music and just love it.

This little amp can put out some good sound. I used this with my old Bose cube speakers, got 4 of them hooked up and a subwoofer.. for the price and sound it’s totally worth it. Wish it was 5+1 though, that would be awesome. But it works well for the price! I can’t find an app for this unfortunately.. I thought there was one, but I searched everywhere and found nothing. Oh well

I didn't expect for it to be powerful and you can control the treble and bass which is really nice for its size. Quality is nice All you need to know is connecting it right. I was just seeing what it can do before my diy project speaker i used a db drive speaker which is 225watts

Sub channel doesn't actually play low pass frequency you can hear vocals and is very lacking in power even at 40 volts it can't put out much. It's almost like it just a 3rd speaker channel they tuned the treble out adjustability isn't amazing either though the speaker output is good the sound from the sub is bad and the whole unit resonates and makes horrible noise if u were playing on mounting this to a diy bt speaker its a no go. Not worth the money or time I wasted.

only after reading the manual found out why BT connection didnt work. need to disconnect audio cable input and USB drive according to manual. even at low volume the tiny fan runs constantly. used a 24VDC 5A power supply. just using subwoofer output and 6 inch 4ohm and playing hiphop. I never listen to rap or hiphop, but when I feel like listening to low-vol bass in the kitchen... this amp did it for me. ever-slightly thumping only for the room. just wanted bass, no music. fine tuning sub freq and sub-vol is just simple-basic. if cranking up vol you will get some distortion and flutter of small woofer. 6inch woofer at about 75 percent vol and Im enjoying my time of non-music audio. woofer I used is actually 12 years old and its a name brand. sounds pretty good. for the price Im glad I bought this. really satisfied for bass listening for 1room, low volume. really nice. many years ago I had like 800W amp and dual 10inch subwoofers for the car. those days gone

Powered off of my 24v lifepo4 battery in my semi truck. Pushes the highs at 2ohm and a kicker comp 10 150w rms 4ohm real nice. Sub is in passenger floor in front of seat, can feel and hear the bass very nicely. I will probably upgrade to the metal encased version in due time, but works good for me.

You can see that it was pulled out of something and there was one screw missing and it was all loose and the smell is also not what it should be. The Master Vol potentiometer also does not work as it should. It does not always want to turn on the first time