Definenly not. Even via an AMP, the needle just touches the bottom and it DOES lose its sharpness, this will start causing you problems over the years as you may be a big tough guy who doesnt need to swap needles as you can handle the pain, but can your internal muscle tissue handle extra damage from slightly blunt needles again and again over the years. Ask any quack, checmist or physician, weather you using an amp or drawing through a rubber stopper, change needles. i keep one just for drawing in its protective sheath and in the plastic it came in, then i put a new needle on every time. The touch guys out here my develop painful scar tissue quicker than us wimps! good luck whatever you do!