Matthews 7’ reverse stand + matthews 4’ telescoping extension. The pair are some of the smallest on the market when folded but still have a footprint bigger than most small/medium light stands and the build quality is excellent (proper tube clamps!). I have 2 with me that went in my carryon. I have big stands for when I can drive/have space, but this is my fav rig for portability.
They have a baby pin so you might need an adapter depending on your stereo bar. Manfrotto makes the nice adapters.