Review on 🔊 Clyxgs TPA3116D2 2.1 Digital Power Amplifier Board - 2x80W+100W Bass Audio Stereo AMP Module for DIY Audio System Speakers (12-26V) by Renee Chavez

The layout and assembly of this product is very good. Why didn't it get 5 stars for 3 things: 1) Crooked central management. This won't be a problem for ANY of them, but assembling mine on a plate would look silly. 2) There is a long heatsink in the middle of the board. There is no thermal paste on the underside of the chips. Also, there is no thread lock on the single screw that holds the heatsink in place. Temperature changes will cause these to loosen, and without lubrication, the sink will loosen contact, which can lead to failure. 3) Added a change but the board was not deleted afterwards. It may contain no-flush flux, but I can't tell. Might be a problem later because I'm returning it for one with all 3 controls in the queue, I haven't connected it to anything. When I get a replacement I will add thermal paste so the chips have proper thermal bonding under the heatsink AND I will add Locktite or something similar to the screw holding it in place. These things MUST have been added by the manufacturer (not necessarily the seller's responsibility, depending on who actually designed it). Update: Received a replacement. Manages"basically" directly. There is no thermal paste on the chips yet, and there is no threadlocker on a fastening screw. If a screw is overtightened, the heatsink will deform and there is a risk of damaging two chips. So a small amount of compound would eliminate this. Also, 2 or 3 screws would be much better and still need thread lock.