Diymore TPA3116DA DC 12V 24V 100W Mono Channel Digital Power Audio Amplifier Board TPA3116D2 Large Capacity Board

Used this to power an old RCA passive subwoofer. It works well and is PLENTY powerful for what I need.I used a laptop power brick as the power supply.It gets a little toasty when run hard but not concerning to me.I can't really rate the sound quality since it's just used one a cheap subwoofer.Happy I got it and does what I need 👍

Most 12v mono amp boards aren't rated well which is why I went with this one (4.4/5 at time of writing). Well, to my disappointment, it died within the first 10 minutes of my testing.I had this board first being fed by headphone level inputs which only resulted in a few watts out at full volume on the board. I then hooked it up to speaker level inputs with my oscilloscope. What I found was that the volume maxed out on this board was not much more power (~5-6W) than on the headphone level inputs. I turned up the volume on my receiver, played around with the volume on the board, and found that there was a lot of clipping at virtually all volume levels. Shortly thereafter, my speaker stopped making sound but the board was still pulling around 20W of power (way more than I could get it to do when playing music). Turns out, it was sending that directly to the speaker as DC regardless of the volume level on the board. Changing the volume, power cycling, and disconnecting the input did not resolve the issue.Lastly, this board DOES NOT USE A TPA3116 chip as advertised. It is a Chipstar CP8673E which I can find little to no information on.Looks like my search for a quality mono amp board continues.EDIT:Found a datasheet for this chip and spent some time translating it. Turns out that the CS8673E chip is only rated for 17.6W at 1% THD with 12v input and 4ohm impedance. You can get 22W at 10% THD. If you crank the input voltage to 24v, 82W is possible with a 4ohm impedance and 10% THD. It is a bit misleading to sell this board as "12V 24V 100W" capable when it is only rated at 82W at 24V and 22W at 12V.Additionally, I depopulated the board to try and figure out what component failed. I found that there are some components that are installed but electrically not connected to anything. Maybe there is a revision that fixes this, but mine has no markings of any sort.

I'm using the device with a signal generator built from an esp32 and an output transformer to boost the voltage. It can work, but the ancient dell 70W (20V 3.5A) power supply won't start it up except by ramping up the volume control and keeping the load constant.Like another reviewer, I believe it may produce a kick on its input terminals when first powered on; adding 10K and some clamping diodes seems to keep the replacement esp32 working.I've only run ~20W into an incandescent bulb at 40-100Hz so far; the heat sink does warm slowly, no fan needed for a few minutes.Diymore TPA3116DA DC 12V 24V 100W Mono Channel Digital Power Audio Amplifier Board TPA3116D2 Large Capacity Board $10 sep2023Bumping from 3 to 4 stars; they offered a refund which I'm not taking because the board does what I need.

Nice boards. They really DO have capacitors with a working voltage of 35 on them, so you could actually operate the board at 24v without worrying about blowing up capacitors. Saw the same exact board available from other vendors which had 25v capacitors clearly shown in the photo; I wouldn't buy a board like that because I'd have to go through the time and expense of changing out the 25v caps for 35v ones before I could use the board with peace of mind!I'm using this board for a mono battery powered instrument amplifier project that uses a 10" speaker. Looking around at ready-made battery powered instrument amps, NONE of the currently available models has large speakers. Crate used to make then in 8", 10", and 12" models but they have all gone out of production at least a couple of years ago. So if you want a portable "busking" amp with a large speaker in it, you have to build your own. This board is a good point to start such a design around.

I'm using this for robotics, taking a low frequency signal ( 1 Hz to 3,000 Hz) and amplifying it. It does that well. It would be nice if it had a better quality potentiometer, but then it would have to cost more.

This thing was back feeding the equipment it was hooked to and fried the equipment. Not only did it not work correctly, it caused damage to other equipment.

This unit was intermittent when I received it.The heat sink fell off taking the IC with it without damaging the pads due to poor solder adhesion.I ordered the IC's from Digi-Key and installed one then bonded a smaller heat sink that cleared the top side components.The top side output capacitors are taller than the IC so the thermal interface is poor.The Amplifier is now working as advertised but a small fan will be needed for high power operation.The PCB should be redesigned to move the bypass caps closer to the IC and holes in the PCB to attach the heat sink so that the installation will not stress the IC leads.

I ran my guitar multi-effects pedal into this amp and sent the output to a Peavey PA speaker and it is absolutely plenty loud to use in a practice session. I will probably use it to convert some of my old PA speakers to powered speakers for monitor use. I highly recommend this amp.It would be nice if the volume pot were a normal pot connected with some pigtails. I had to cut the old pot off the board and solder my own pot onto the stubs so that I could make adjustments.