I've been a drummer/vocalist for 40+ years, and the single biggest challenge has been effective vocal monitoring. The second biggest challenge was getting the electronics dweebs in the band to buy the idea that an inexpensive passive device would work. Well, it does--perfectly. I wish I'd found this thing decades ago. All I do is plug it into the floor monitor jack and slap on the Sennheiser open back, on-ear phones. I get plenty of ambient sound for a live feel and a great vocal mix. Granted, we only run vocals and and drum mikes through the board, but the kick drum and vocal harmonies are all I need to hear. If we played a large venue (which we don't) and miked guitars (we don't) then I'd probably have to go with a headphone amp and isolate my mic. For what we do (bars, clubs, small-town outdoor summer festivals) it's the best forty bucks I ever spent. Singing drummers in local r&b/country/rock/eclectic bands, this thing was made for us. And, while I don't recommend doing it, I've dropped it on wood stages, flatbeds and cement. It still works.