Worst product. I brought it to power by 12v 2A speaker and the adapter could not even capable of driving it. Even when not playing anything, power to my speaker kept fluctuating constantly. Even the packing was just a plastic wrap. My speakers are working absolutely fine with another 12v 2A charger (Branded) infact working fine with powerbank with stepup module rated for just 1A but this 5A adapter couldn't. Complete waste of money and time. Going to return it immediately.