DAMGOO Bluetooth 50W+50W Stereo Audio Amplifier Board: Wireless DIY Speakers with Treble and Bass Control, BT 5.0, AUX Inputs - Easy Installation, Password Free Review

I ran this from a 19V 5A power supply and connected it to a pair of good quality bookshelf speakers. I can't turn the volume up past 1/4 without getting a lot of distortion. As a test, I hooked up my cheap 1990's boombox to the same speakers and it put out about the same amount of pure power before going into the distortion range. The Boombox is rated at 8 watts/channel at 8 ohms. According to the specifications of this amp, it should deliver 20 watts into 8 ohms at 19 volts applied, which…

This looks great and is powered by an old 12V 500mA PSU sitting in storage BUT when we tried To connect the speakers we were unable to loosen 3 of the 4 mini Phillips screws because someone either overtightened or glued them. We hope it was an accident and have ordered a second amp. The second amp had the same problem with a screw that was over tightened! However, after carefully trying to loosen them with various larger screwdrivers (without removing the heads), I FINALLY managed to loosen all

Amplifier small and light, did not get very hot when I used it, has two impedance values, compatible with 4 ohms and 8 ohms, one channel i with 150w woofer at 4 ohms, despite the fact that this amp only puts out 50 watts at this impedance, the sound quality hasn't suffered much. I used channel 2 to daisy chain two small 4 ohm speakers and they sound great. All in all I think I pushed this amp to its limits, everything seemed great up to that point for a couple of weeks. If you're looking for…

I really only have one complaint. Everything OK, when I tried to loosen the speaker screws to insert the speaker cable with the screwdriver that was sent to me, the screws were so tight that the screwdriver blew them out. Luckily I had a backup. Another complaint I have is that the power cord is very flimsy. But other than that, I love this little amp. I used it with the 12v battery recommended above. For a test run I did as they told me and hooked up a 6 inch speaker or subwoofer to see how…

Random woodpecker sounds, especially at low frequencies. A humming sound that starts at 50% of maximum volume. Update: The seller's post indicates that the problem was likely caused by low powered speakers that cannot handle the power output of the amp. As I bought this amp to drive these speakers just removed from an old TV I have returned the product and cannot confirm this. ========================Original message from seller: We spent a day testing several speakers and now we have found the

This little Bluetooth audio amplifier packs a punch and I just used a 24W (12V @ 2A) power supply. I tested it with two Dual Electronics LU43PB 3-way component speakers with a nominal input impedance of 4-6 ohms (https://www.amazon.com/gp/product/B00081NX5U). I think powerful component speakers are the best way to get the full breadth of audio control that the bass and treble controls give you. After cranking the bass up to around 75%, the sound quality was pretty good and enough to shake the…

I have DAMGOO ZK-502T and ZK-1002 digital amplifier. Both work well with 16V laptop power supplies. Both ensure sufficient volume. I bought a class D for a TV and for a garage and got great results. I needed a replacement due to an apartment fire.** Mine broke after a few weeks. The BT ready signal kept beeping, interrupting music playback on the wired input. BT takes precedence and if it fails to connect you get stuck with repeated beeps. Revain chat support quickly arranged a warranty…