Picked up this machine because I've heard good things and wanted to see how it worked. It's light, it's quiet but compared to my other machine with a maxxon motor this motor feels a little underpowered. Struggled to line initially, but I prefer a higher-voltage faster hand approach. It's difficult to find any information on preferred voltage on line, but the "ideal" voltage is up to 7.5, working voltage is up to 9 and voltage cap is 12v. At 9v, it lines like I expect a machine to line. at 7.5 it struggles, in my opinion. It works with a battery pack if you want to go cordless, but I prefer the cord on this machine. It's a nice machine, built well. Probably does 50% of my tattoos in a week swapping between a cordless machine I have.