Fastidious - "Excessively Particular, Critical, or Demanding;Hard to Please."

Forty engineers and two years later, we bring you what just might be the last power supply you’ll ever buy.
Designed, sourced and manufactured in Japan, we created a PSU that’s so exceptional that it exceeds 80 Plus Titanium efficiency.
Its current is so smooth and stable and its temperatures so low, that we needed to create new standards to measure them.
This is a power supply designed for PC connoisseurs that demands the best of the best.

10 Years Warranty

Because CoolerMaster trust the quality of our products, the MIJ comes with a 10 years warranty. Unlike most PC component warranties, this one is transferable, if you would like to pass on your power supply to a family member or friend in the future. Register on our Fan Zone to enjoy your 10-year warranty.

Fully Modular, High-Capacity Cables

The MasterWatt Maker is fully modular and comes with a new type of flat cables that has a sturdier connector that goes beyond the current power supply standard by offering improved surface contact that can efficiently carry 1.5x the current of normal connectors.
Note that the new connector type is not use for the ATX connector.

Modular Cables

Output Rating