Miller Maxstar 400 TigRunner DC TIG/Stick Package

Smooth Arcs and Silent Operation

For the professional welder, the Miller Maxstar 400 TigRunner changes the game by addressing two of the biggest shop floor complaints: noise and setup time. This package comes ready to roll with the machine and water cooler securely mounted on the Runner Cart, meaning you spend less time rigging up and more time under the hood. The standout feature for daily operation is QuietPulse™ technology. If you are used to the screaming buzz of traditional pulse welding, you will be amazed by how QuietPulse modifies the DC pulse waveshape to create a slower, more fluid transition. The result is a significantly quieter arc that reduces ear fatigue without sacrificing the puddle control you need for precision work.

When it comes to arc starts, the Blue Lightning™ High Frequency Arc Starter delivers consistent, non-contact starts every time, eliminating tungsten contamination and the frustration of failed ignitions. Whether you are welding pipe, fabricating pressure vessels, or working on aerospace components, the arc stability is unmatched. For those times when you need to switch to Stick welding, the Maxstar 400 doesn't compromise. It features Tailored Arc Control (DIG), allowing you to dial in the arc characteristics—from a soft, buttery arc for 7018 electrodes to a stiff, digging arc for 6010 root passes.

The user interface is designed for efficiency, featuring a bright display and intuitive controls that are easy to adjust even with gloves on. The Pro-Set™ feature eliminates the guesswork by providing professionally optimized settings for speed, balance, and cleaning, getting you into the weld zone faster. With the Maxstar 400 TigRunner, you aren't just buying a welder; you are upgrading your entire welding experience with a system built to support your craftsmanship.