Where is the name of the female 5 pin connector used in the HP2's adaptor? - Questions & Answers | PreSonus
PreSonus HP2-15 Personal Headphone Amplifier Battery-powered Stereo Headphone Amp with TRS Inputs, 9V Battery or DC Power Supply, and Belt Clip - Musical Garage SCH
PwrON (6.6FT Cable) AC to DC Adapter For Presonus HP2 HP-2 2 Channel Personal Stereo Headphone Amplifier Power Supply Cord - Walmart.com
KONKIN BOO Compatible AC / DC Adapter Replacement for Presonus HP2 HP-2 2 Channel Personal Stereo Headphone Amplifier Power Supply Cord Cable PS Battery Charger Mains PSU - Walmart.com