Giá đỡ điện thoại (Phone holder) khuếch đại âm thanh

I liked the first one I made so much I decided to make another one. Similar to the Docking Station, it really works. Pushing the sound through the channels to amplify your audio. Fits most phones and chargers, Print settings, No supports needed, Nozzle size 0.4mm, Layer height 0.2mm, Print speed 50ms, Infill pattern grid, Infill density 15%,