TB21 PRO TPA3116D2 Bluetooth Power Amplifier Board with Subwoofer 2.1 Channel 50W×2+100W, 12V-24V Audio Power Amplifier Module with Treble and Bass Control

The media could not be loaded. It perfectly meets my needs; it seems designed just for them. It uses the TPA3116D2 chip and supports the AAC Bluetooth protocol. It may look small, but it’s truly powerful.

When I receive mine, I open the plastic bag and found that the heat sink had come off and was stuck to the capacitors. The screw that holds it was at the bottom of the bag. Every screw in this item was loose, I removed the cover and cleaned all the thermal paste off, applied new thermal paste and reattached heat sink properly, I’m glad I noticed it before I plugged it in, overall this is a pretty good little amplifier, and it works as described, just inspect everything before you use it, I’ve used it with several different sets of speakers and subwoofers and it seems to work pretty well Although there seems to be an issue with lack of mid range, could be all the speakers I’ve tried, the app itself is useful to name the device and put a password on the Bluetooth, but other than that, I deleted it, The app made connecting with Bluetooth more difficult but I would buy this product again.

outside patio music has lots of power

I've had this Bluetooth amplifier since July 2024 and it was running as it should, but now the built in fan is very noisy. It is not dirty, just sounds like the bushing may be going bad as it sounds very rough. Especially when first turning it on. Otherwise it performs as it should.

Ordered this to go along with my virtual pinball machine I'm building. I needed a way to control my midrange and sub driver independantly and this gives me the ability. I wasn't looking for extreme power, just something with a little ooomph and adjustability. I've played around with this a bit and I feel this will work great as I complete the build.

ESTA EXELENTE POR EL PRECIO, LO MALO ES QUE NO TRAE FUENTE Y QUE NO SUBE TANTO COMO ESPERABA

This amp looks DYI project, which looks cool (maybe I can use with my Raspberry Pi HIFI player), but missing some user friendly feature such as banana plugs or RCA jack for subwoofer that found on similar amp I purchased from Amazon.The package did not include power supply which is bummer... I recycled one of my other amp's 24V power supply. Works well.The output has good bass and can achieve high treble. I didn't try connecting subwoofer, for bass works well with my current desktop speaker (getting some thumping bass!!!).Very high output and getting very loud sound. For my speaker setup volume level is around 30% for casual listening (24V input). Get very loud above 50%. Sound quality is good, but nothing extortionary (maybe I'm so used to my other hifi vacuum amp) Good bass for pop to house dance music. Other genre of music sounds good too.I've noticed all the knobs were incorrectly mounted for level indicator (small scratch on the knob) are in different positions - when turned all the way down, one points to top, one points to far right, one points to 20% mark - none them was in correct position, and I had to pull it out and reposition them).Not sure if this is due to high output power, but when I have the volume to zero, I can still hear sound out of speaker. You can mute sound by pressing volume button once.Additional input works fine, too. Pressing volume button 4x as instruction says switches between input.For USB playback, it has to be Fat32, at 32GB max. I tried 64GB thumb drive, but won't recognize it.No problem when I pugged in 8GB thumb drive - still lot of music.App does not exist for latest Android. I tried look for app in Playstore, but it says, it's not compatible with my Galaxy 24+ for app was written for older version. So not sure what app enables - for I would like to see what's being played on USB drive and able to select song (not sure even this is available in app). I don't think there is option to skip song or back track option (or at least I couldn't figure out).There is no headphone jack output.It's good value, but when you consider you need to purchase separate power supply, it adds around $10-$20.

The unit is strangely finished. It doesn't really have a case but uses a second circuit board in top to mostly enclose the components so it is safe and reasonably protected. Depending on what style you are looking for, this is really cool of a little unfinished. (I was surprised but am fine with it)The unit is quite compact and, rather than a mode selector switch, it uses repetitive presses of one of the knobs. It works fine but it is important to read (and hang on to) the instructions.The speaker connections are clamp type raw wire connectors. Not unusual but could be surprising to some. I ran this on 12 volts with 8 ohm speakers and sound and power were great. The quality seemed very good and Bass and Treble worked fine and gave a nice ability to match things to the speakers and room. I mostly ran with the aux input. While selecting the input by pressing the volume knob is a little strange, the unit does remember the last used mode so it may very well be a set and forget thing for most.You will need a 12 to 24V DC power source. While the unit is nice and compact, the need to attach raw cables instead of connectors may make it best suited to fixed installation as opposed to portable use. On the other hand, it could be attached to an auto lighter adapter (12V) and taken with you for tailgating or camping. It is a nice little amp and gives better audio than most devices drive when left on their own.