ZK-1002T PRO 2.0 Channel Bluetooth 5.0 Amplifier Board 200W HiFi Subwoofer Audio AMP with Treble and Bass, BT USB and AUX Inputs, DC 12-24V 2.0 Channel Stereo AMP Module for DIY Speakers

Excellent Little Amp for DIY Bluetooth Projects I used the ZK-1002T Bluetooth amp in a custom portable speaker box powered by an 18V battery, and it absolutely delivered. For such a compact unit, it puts out plenty of clean power—more than enough to drive my 6.5” marine speakers with solid volume and clarity. Bluetooth pairing is quick and reliable, and the sound quality is surprisingly good, especially for the price. I also like that it supports both Bluetooth and aux input. The compact size made it easy to mount inside the case without overheating or needing extra ventilation. Just be aware that there are no instructions included, so if you’re new to wiring or amps, you may need to reference some diagrams online. But for DIYers who know their way around a project, this amp is a solid choice. Highly recommend for anyone building a battery-powered sound system or portable speaker setup.

Works well for my diy boombox. No static/hiss like some of the cheap(er) ones.

Easy to wire, great tuning and sound quality, more than enough power for most cases

Good quality. Good power and noise level adjustment. Nice and compact. Worked great in my ammo can music box.

Overall phenomenal. Bluetooth range could be better, but sound quality is decent. Energy efficient and works with a broad voltage range which makes powering it super simple. Used it in a boom box that is powered by a 20 volt cordless tool battery. Runs all day on a 4ah battery at a decent volume

This unit worked great. Connects very easily via bluetooth. Puts out plenty of power for two 6” speakers and a tweeter. Running 2 old 6” speakers from my car and 1 tweeter with this unit on a 5ah Milwaukee m18 battery with 12v adapter. Battery easily lasts 4 hrs on half volume (which is loud). Best part is if it does die I have multiple batteries on hand. Does obviously need a 2 way crossover for the tweeter. Cons of this unit would be that it’s not already put together. Which is odd to me because you can attach the speaker wires in with the outer casing installed. Screws are very tiny that come with it. Also I do get a small amount of interference with the bluetooth but not enough to annoy me. Could be the power source.

works great, good sound

Great little amp. I will say you must be careful with the volume knob. With an 18v input, if you keep the treble and bass knobs in the middle, you can not go over 55-60% on the volume knob otherwise the amp will clip. If you go all the way on either bass or treble, you will clip around 40-45% on the volume knob. The remaining amount left on the volume knob doesn't get louder, just dirtier. All testing done with oscilloscope. With that being said, this amp will do its rated power. At 18v, I was getting around 17 volts per Channel before the amp clipped. This was playing various test tones through Bluetooth for worst case and to see how clean the Bluetooth DAC is. For a 4 ohm speaker, that is around 90 watts rms this amp was providing with a solid test tone. I am really impressed. 2 items I would recommend to the manufacturer is include a small Phillips head gain adjustment on the board so the user can set the amp gain properly. Second, include some mounting standoffs so you can screw the amp into what ever project you are working on. For the negative reviews, I believe the amp is cutting out or quit working due to clipping itself to death if the user has not tested for their application. Highly recommend if you want an all in one that has Bluetooth, wide voltage range, and EQ all built in.

Very good product exceeded all expectations

me sorprendió su potencia y nitidez, el control de bajos es muy bueno, no distorsiona, superó expectativas

छोटा पैकेट बड़ा धमाका ❤️❤️

Works great some distortion when maxed out but that could be speakers or the fact I'm running it at 18v

Best quality audio amplifier