For maintenance ops, a reliable ground power unit has become an essential hangar accessory – especially for supporting the advanced, power-hungry systems in newer turboprops and jets. Audio Authority, with its White Lightning SmartGPU, has been on the cutting edge of ground power units and has advanced the SmartGPU to a higher level. In this video report from Sun 'n Fun 2026, company founder Jon Sisk gave Avionics News contributor Larry Anglisano a demo of the latest SmartGPU while saddled up to the new Daher TBM-980 turboprop.