A detailed scientific study is currently underway and will take some time. In the meantime, please listen to these informal tests I have personally conducted to demonstrate the impact of our products.
Here are two demonstrations: one features a budget-friendly but surprisingly high-quality instrument (a Thomann TR 200) and the second features a premium professional instrument (a Bach Stradivarius Model 37 25LR). For each trumpet, the same musical passage is performed in three ways: without a booster, with a standard booster, and finally with the brazed booster.
As I am primarily a trumpet player, I have not yet recorded samples for trombone or tuba, though the acoustic benefits remain consistent across all brass instruments. Shown below is our brazed booster version—a sleek, discreet, and elegant design that represents our most effective sound solution for any serious musician.