MakerHawk copper Bluetooth Amplifier Board Hifi Stereo 2.1 Tpa3116D2 2X50W+100W 12V-24V Audio Power Amplifier Module Bass And Treble Control For Store Home Theater Speakers

seen many videos and products on youtube and internet related to a diy amplifier board, ordered this one and i got more than what i was looking for, this is best diy amplifier board on amzon with one 3.5 mm aux input and one 3 pin mic input. there is usb and bluetooth input also included. two 3 pin audio outputs are also there to add more peripherals with it, sound quality is crisp and clear with no noise. only drawbacks in the board are it doesn't switch off the bluetooth when aux is inserted, there must be a switch in front of the aux connecter to switch off the bluetooth when aux wire is inserted in aux connector or a remote must be given to change the inputs. highly recommended !!

Good product worth for the money

I was skeptical about the quality of this product when I ordered, but now I am very happy that it was right decision I made. It works beautifully, with all that bass, treble and subwoofer controls and with lots of power to the speakers. Can’t expect anything more. I am using it on my old JBL 3 way speakers replaced by all Dayton drivers.

I bought this ZK-TB21 2.1 channel amplifier module to build a custom audio setup combining my Audio Arrays studio monitors and a 8" 150W subwoofer, and I must say — this little board exceeded expectations! 🔧 Power & Setup I powered it using a standard PC PSU (12V rail) via a DC barrel jack with a terminal block adapter. Just make sure to connect the yellow 12V and black GND wires properly — it worked like a charm once powered on! 🎛️ Subwoofer Integration The Subwoofer Frequency knob is a real game-changer. I set it around 70–80 Hz to let the sub handle only the deep bass, while my studio monitors take care of mids and highs. This avoided the common issue of muddy or boomy bass — the sound is now clean and well-balanced. 🎚️ Fine Tuning Options It has separate knobs for Sub Volume, Treble, Bass, and Main Volume, which gave me full control over my sound. I kept treble and bass flat since my studio monitors already offer accurate output. 🔗 Connection Simplicity I used an AUX splitter to feed the same signal to the amp and my monitors. It’s a very easy and effective setup for casual listening or even light production work. No signal loss or distortion noticed. ✅ Pros: Compact but powerful — easily runs a sub and full-range speakers Great tuning flexibility with separate controls Affordable way to build a Bluetooth, AUX & USB -ready 2.1 audio system Perfect for studio monitor + subwoofer setups ⚠️ Things to Know: Requires a 12V–24V power source with enough amperage (I used a PC PSU)

I received the product with no screw on the terminal and also no screw to tighten the top an bottom cover.. Another big issue was,the subwoofer terminal doesn't work..

value for money

Don't waste money

Great amplifier. Works well with 14 volt adapter also. Sound on bluetooth is not so good. But overall a great product. Update: I have a Panasonic SA-AK122 Music player. I connected speakers of this Panasonic music system to ZK-TB21 amplifier. It sounds great with this little amplifier. Even more clear than Panasonic system.

So far, I like this little amp. It came packaged well: small box with a disassembled unit that you put together. I'm a tinkerer, so that's perfect! It was easy to assemble. Took less than 5 minutes. It has a 3.5mm stereo jack or blue tooth for pairing to a phone. I tried both and they worked well. Sound quality is good, albeit I don't have my speakers mounted in a box yet, so I'm hoping for a marked improvement. All in all, I'm happy. If you're expecting high end perfect performance, you probably want to go with something more costly. If you're building a simple stereo project for the fun of it, try this out. It's cheap, small, and fun CON: didn't come with a power supply. I received some advice from others and ended up powering it up with an old 12v 3.5A adapter from my old Netgear router. It worked! I'll get a better 12V or 24V 10A supply later.

Very large sound from a small board. Almost lossless distortion. I had another set up on the bench for an mini in-dash BT/FM/Aux receiver/amplifier, so I just needed to swap in the speaker leads and the power supply. Used my variable voltage supply at 12V-2A. Connected to a pair of 3" full range (60-20k), 90 db sensitivity, 4 ohm speakers, 40W (specs call for 50-100W input). No noise issues at all (others that reported this likely misconnected the amp/speakers). Bluetooth sourced from my Fire tablet, found the device in seconds. Volume set on max on tablet, then tried various volume levels on the amp, including full out on Classic Metal on Slacker (I know, LiveXLive), no distortion discernable. Speaker specs recommend a passive radiator for improved bass, this was just a free air test. Played on Piano Jazz on Slacker, awesome sound. I really like the switched pot they used for volume - simply on-off and volume operation. Only thing I saw on initial test was the volume seemed to go out well before Off position, likely due to the pot value used, I'd give it a 4.5 for that....otherwise a 5 overall. I have a few 24V power and torroidal transformaers I may try for a permanent power source. This may end up a desktop or portable bluetooth speaker

Muito bom aparelho sistema bluetooth excelente!!! Recomendo

Esta compra me super agrado, nunca imagine que este super pequeño amplificador alimentaria mis bocinas Micca y las llevaria a un muy alto volumen. Es fantastica, solo asegura alimentar adecuadamente y el equipo te sorprendera.

Well worth it. Very clean sound. No noise. Plenty of power. HINT: those 20v batteries on your power drill are perfect for creating a portable boom box project. Years before Bluetooth speakers became a thing (but after iPods) I cannibalized Klipsh, Cerwin Vega, Altec, JBL, home speakers to build boom boxes and have recently replaced the old amplifiers with these. They ALWAYS work fine. And your battery will play for hours if you are reasonable with the volume. Most folks don’t realize how much volume you can get with 1 watt/channel, 15 is overkill. Still, watch out for distortion and high end sizzle because it’s possible to overpower some high efficiency speakers.