After using a few friend's amped regulators since mine was down I quickly learned to love the regulator and the simplicity factor of just being able to turn the knob to adjust the psi on the fly at chronoing without needing tools I can't tell you how many times I've forgotten my tool and had to wait in line again after going back to get it. However, it didn't come with a manual so I had to figure how how to depressurize it on my own which wasn't too hard to do but did take a minute to figure out I think just a short step-by-step manual would be great for new users!