DAMGOO 50W+50W+100W 2.1 Channel Subwoofer Amplifier Board with Treble and Bass Control, Dual TPA3116 Chip, DC 12-24V, Bluetooth and AUX Inputs, DIY Wireless Speakers AMP Board, Password Free (ZK-TB21)

Super potente, me levantó facilísimo dos bafles antiguos Fisher con un bajo, una bocina y un tweter cada bafle. Le coloque una fuente de laptop de 19V/3Amp y no se calienta. Recomendado al 100%

Ho comprato questa scheda amplificatore Bluetooth a 2.1 canali per collegarlo in parallelo all'impianto acustico che avevo in garage, collegato ad un autoradio Apline 50W X 4... però mi serviva anche un ricevitore bluetooth per collegare il mio smatphone… il collegamento è stato fatto in parallelo con l’autoradio inserendo un commutatore per l’alimentazione come in foto, in modo da poter accendere solo l’autoradio oppure solo la scheda amplificatore Bluetooth, come alimentatore ho usato quello che avevo per l’autoradio (trasformatore stabilizzatore 13,6v 5A) il tutto funziona molto bene, l’impianto è formato da un sub woofer da 50W + un woofer da 50W + due casse a tre vie da 100W +100W, alzando il volume al 50% il suono è molto forte e con il giusto settaggio si sente moto bene, lo uso da circa due mesi e non ha dato nessun problema. Qualità/prezzo eccellente, Lo consiglio. N.B. per avere una buona resa bisogna collegarlo ad un trasformatore con una buona potenza, altrimenti quando si alza il volume non rende bene perchè ha bisogno di più potenza,

For the price of it this produces great sound quality and has lots of power

Utilisé avec des enceintes dans l'atelier. Fait le job. Bon rapport qualité/prix

I was using a vintage Pioneer 25W/ch receiver for the sound system in the workshop. I also have an old JBL powered subwoofer that had the amp go out, so I decided to order this little amp to see if I could power the old sub with it and at the same time replace the old Pioneer receiver for a little more volume, in addition to the sub added. The final setup: Two existing ceiling speakers, 8 Ohms each, paralleled with two Klipsch bookshelf speakers, 8 Ohms each , for a net 4 Ohms per channel; re-purposed JBL sub that has two 5 Ohm speakers in parallel, so 2.5 Ohms total. Amp is powered by a 24V/100W LED driver. The result: awesome! The bass could be better, but considering that the subs are only 6” diameter, not bad, certainly much better than without the sub. The Klipsch bookshelf speakers add a lot to the midrange and highs, complementing the ceiling speakers. As for the power supply, I first hooked it up with a 24V 60W power supply, and it worked fine, although the subwoofer started to clip at a fairly low volume. The power supply never got warm however. I tried a 24V/100W power supply anyway, and the bass was vastly improved. This tells me that the 60W was not able to supply the current peaks, so the 100W is staying. So, spend a little more and go for the bigger power supply to get more distortion-free bass. What I like about this amp: BT works flawlessly, connecting each time without fail. The range could be better, but understandable since the built in antenna is just a small PCB trace. There is a connector for an external BT antenna if desired. I like the audio controls: Bass frequency cutoff and volume, treble/bass/volume for the stereo channels. The amp is very power efficient, and has more power available than what I need. With a 24V power supply, driving 4 Ohms per channel + 2.5 Ohms subwoofer, it barely gets warm after several hours. My only complaint: The speaker terminals are tiny, so stacking wires greater than 2x 18ga can be difficult. Bottom line: highly recommended.