ZK-1002T 100W+100W Amplifier Board with Treble and Bass Control, DC 9-24V, BT and AUX Inputs, 2.0 Channel Stereo AMP Board for DIY Wireless Speakers

Used this with an old broken Bose sound bar system that I retrofitted. The amp in the sound bar died. I wired the board into the enclosure and now I use the sound bar as a high quality bluetooth speaker. The bose system had 4 speakers, 2R and 2L. I was able to wire each of the 2 sides in parallel after checking the impedance and it is working great. The bluetooth connection works great, the sound output is loud and clear and it was easy to find an old DC power adapter that worked between 9-24V with at least 5 amps. I chose to use an old 24V (90W) adapter from a broken laptop to give me the most power since the Watt output is directly related to the Volts of the power adapter. I embedded an inline power switch and routed it to the front of the speaker so it is easy to turn the system on and off without reaching around to the knobs. The speaker looks great and sounds better. I love finding a new use for old equipment. The board was easy to wire, has plenty of connection options and the knobs make it easy to adjust the bass, treble, and volume. It wasn't too expensive for a 200W amp. This board works great for these types of projects.

It sounds great, plenty of power for my two 35 watt ms 4” speakers. Very discreet “bing” sound when the Bluetooth connects to my phone. Easy to assemble and install. Doesn’t get hot. Audio pauses when I get a phone call (call doesn’t go through the amp). Solid and stable Bluetooth connection. Perfect “hidden” stereo for classic car - I left the original, broken, AM radio in the dash for looks, and replaced the single 4”x10” mono center-dash speaker with two Infinity 4” Reference speakers rated for 35 watts RMS (105 max) 4 ohm each. This receiver has more power than I need, so I have it’s volume set at 60-75% of max. I get a small but sufficient amount of base (pleasantly surprised), and nice mids and highs. I like being able to adjust base and treble. No hiss or noise. It’s loving the 13 volts my car delivers. I’m very impressed with this little receiver. No complaints, and almost free. The downside to this setup is that I need to touch my phone to adjust volume, skip songs, use Siri, etc. Also, an incoming call will pause the Bluetooth, but not route the call audio through the car speakers, and there’s no microphone,so no hands-free calling. My solution was to also buy “Aston Innovations SoundTek A1+ Bluetooth Car Kit”, and plug it into the AUX input of this little amp. Then I use the Bluetooth of the SoundTek instead of the Bluetooth on the amp, and I have everything I want: 1) Original looking (but not working) 1966 AM radio in the dash 2) Streaming music through Pandora or Spotify 3) Hands-free calling where I can hear and be heard, and use Siri No AM/FM, but who cares. The SoundTek has a 1.6” round control pad that I can hide in the ashtray or wherever. Through it I can control everything by feel, without needing to look an or touch my phone: volume, next song, previous song, pause, make a call answer/reject a call, or use Siri (voice commands). This amp, plus the hands-free SoundTek kit, sound great, and cost very little.

Works well and sounds great for the size! Definitely well worth the price and you get a lot out of it, it’s nice to have the different controls too. Very handy and functional!

I needed a little amplifier for a small stereo stage monitor that I made. I originally purchased the AK-170 class D amplifier off of eBay and I was initially impressed with the volume it put out as it was the first mini class D amplifier I ever purchased. Since that time I have purchased and tried several other small class D amplifiers and they all sounded about the same. I was looking at other small amplifiers on Amazon and thought I would give this one a try. When it arrived I had to do some minor assembly but it went together easy. After assembly, I hooked it up to the same power supply as my AK-170 which is a 12Vdc, 5 Amps supply. To my surprise the sound was night and day. This little baby has some kick. I fed my signal generator into this amp and it truly amplified sound down to 20Hz. It gave me the sound and body that I was looking for. It is definitely a much better quality amp than the others that I tried. Now I have to figure out how to modify my cabinet to accommodate this little guy cause this amp kicked the other one to the curb. I am going to experiment with a larger voltage supply as that will give me even more headroom and cleaner amplification. The blue tooth works perfectly though I think the sound is a little better when using the wired connection. You owe it to yourself to try this little gem. You won't be disappointed!!

These pocket amps work really well in a pinch when I am testing lines for a new audio installation. The push a good amount of volume without need an intense amount of power, I'm able to run these off of a fairly large portable battery pack for remote operations in a fast setting. My main qualm with them is that the ceiling they have hits like a brick. When it reaches the peak intensity, it sometimes sounds like a bomb going off through the speakers. Of course, this could be due to a lot of the systems I work on being increasingly older and horn-based, but most amplifiers nowadays have a passive limiter in them to avoid such a sonic. Other than that, I use them pretty often and I can't complain too much.

The sound is fantastic. I have been looking for a blue tooth unit so I can have music from my old speakers again. I hooked it up and when it came to life, I was amazed at the sound, that I have been missing for some time. I powered it up with my Ryobi power converter, and it worked Great!

very impressive considering the low cost. I suggest using a 24 volt power supply

So I wanted to build myself a little portable bluetooth system that I could slap one of my 24v kobalt batteries on. At 24v let me tell you this thing pumps, and the audio quality is actually impressive. I have it hooked up to two 4ohm rockford fosgate 6x9 speakers and the bass rattles, the treble is crisp and clear, and the bluetooth functionality works perfectly with decent range. I've run it for 3 hours straight with only one bar lost from my 4.0AH battery. Doesn't even get very hot. Overall, i'd buy this product many times over. Edit: So, 4 years have passed, and this little guy has finally started giving me trouble. First with the aux output mode giving out, and then the bluetooth mode. Honestly, for 26 bucks I'm impressed it lasted this long. i've been using this exclusively to power my PC audio for several months, and let me tell you it has enough power to rattle the windows with the right speakers. What are you waiting for? Stop reading this and buy it already. I'm ordering another one right now.

Tiene buen sonido estéreo, la calidad de sonido es buena, me gustaría que su carcasa fuera totalmente cerrada y que incluyera un control de balance, funciona muy bien.

Nice Heavy Amplifier

Compact et efficace, brancher sur des enceintes Cabasse, résultat très sympa. attention il n'est pas livré avec le câble d'alimentation.

Non mi sarei mai aspettato una simile potenza, alimenta un impianto bose (anni 90) senza problemi ed il suono tramite bluetooth è spettacolare, acquisto consigliatissimo

The package came with 2 panels, one for the top and the bottom along with screws and a small screwdriver. Assembling the item was super easy. I was reluctant at first but when I connected to my old speakers, it worked wonderfully. The bass and treble are very good, provided you have good speakers. The output is amazing. The clarity is also very good. Never thought that this tiny amp could do wonders. Thumb up to the manufacturer for making such affordable mini amps.