The Saturnworks Reamp is a handmade, American-made device. Its function is to convert a balanced line-level signal (lo-z) to an unbalanced instrument-level signal (hi-z), allowing it to be used with guitar pedals and amplifiers. It has a TRS input type. It's a passive circuit and requires no power. For more details, please visit the website: https://saturnworkspedals.com/product/reamp/ Thank you for looking.