Well I've used it everyday so far and I have been lining with it and shading.. For lining I've been using baggy elevens at 6.7 volts with no problem.. It actually sounds like a coil and hits like one , as for shading it has that same effect. Just enough built in give for that sweet spot.. I have used so many fucking rotaries and I really believe that this is the one for me.. I have never lined so easy in my 10 yrs of tattooing.. And better yet the needle always stays up.. I will be buying another for the simple fact I won't ever need another liner..