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New: Dual-Voltage Portable GPU

We are proud to announce the next model in our Mini-GPU line, the M1428-DV. It brings portability and versitility together for those who own two aircraft, maintenance shops, and flight schools that commonly require 14 and 28 volt ground power. The M1428-DV is only slightly larger than the others in the line, but offers a separate power supply for each voltage output. It is more convenient than buying two GPUs, and less expensive. It comes with two cables both terminated in a AN2551 3-pin external power plug. Other cables are available for SB50 and piper-style connections. Accepting pre-orders now for Fall delivery.

  • Price: $1,025
  • Selectable Output 14.25 or 28.5VDC
  • 14 and 28V output cables included, each have AN2551 3-pin external power plug
  • Dimensions: 6.13H x 5.32W x 14.8D


  • Independent, dual high-efficiency switching-mode power modules
  • Color-coded, keyed, separate outputs to prevent voltage mismatch
  • Front panel switch-selectable output 14V (yellow) max 35A or 28V (red) max 27A
  • Voltmeter/Ammeter with status LEDs
  • Programmable auto-shutoff timer


  • Owners of both 14-volt legacy/experimental and 28-volt aircraft
  • Maintenance and avionics shops needing airframe power for all types of aircraft
  • Flight schools and instructors training in all types of aircraft
  • Aircraft brokers and sales agents for both contemporary and vintage aircraft

Suitable for avionics demonstration and testing, database and firmware updates, flight planning and cockpit procedures training, troubleshooting & maintenance, battery top-off charging, powered pre-flight inspections.

Download the new pricesheet.

Download the press release and product photos here.

Learn more about the M-Series GPU Lineup.

Ground Power Units for 12 and 24 volt aircraft

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