It's not a placebo that's for sure. It seems to be more effective if your younger, if you've done it multiple times, or if you just listened to condition or reset. The suggested setup is with stereo headphones, though I've gotten success with stereo earbuds, and eye cover(like pulling your hood over your face.), eyes closed no outside distractions you should eliminate all X-factors. Eyes should be closed but if the room is dark enough with and eye cover you can keep them open. You shouldn't be in a situation that requires much attention, such as a football game, or on the bus having conversations with people. It should be at a kind of medium-low volume level where you don't hear very much static at all.
I-Doser: Binaural Brainwave Doses at the bottom it says, "Free Doses!" or something. Click it and choose the one at the top that says "2 free doses and a download for windows."
Or you can go on thepiratebay.org and get alot of free doses as a torrent, the entire thing is just a rip off of sBaGen, which is free.
It works on people who are younger and with a less active mind, so Your effects optimize like when you just wake up, or at least for me.
I haven't tried the lucid dream one yet, though I should :?.