“Looks a simple but efficient piece of kit. I haven't used it yet, its stored in my draw of projects yet to get to. I guess the one thing to say is the prongs are very easy to bend when dropped! Keep the booster in a safe ready for use.
Mine is waiting for me to have time to start another project.”
“Boosts the header, by the height of a header, what can I say! It steps a HiFiBerry Dac+ 3.5mm line out board off a Pi4 to fit on top of the Aluminium Heatsink Case neatly so should give clearance for most boards without components/connections on the underside. If in doubt buy two.”