Brand new nanoRings built by an electronics engineer with over ten years of experience. Identical to a factory Rings, in only 8 HP! Has a premium black aluminum Magpie panel with a lovely printed design. Higher quality than PCB panels commonly used on micro Mutable designs. Calibrated and tested, with factory Rings firmware. Ships promptly with a Eurorack power ribbon. All our builds come with a one-year warranty--we stand behind the quality and durability of our modules.