Jesse Kardon is alias Subtronics, is an American dubstep DJ and producer from Philadelphia, United States. He is best known for his song "Griztronics", a collaboration with Michigan-based electronic music artist GRiZ that peaked on Billboard's Hot Dance/Electronic Songs at the No. 9 position in late 2019. Kardon peaked at No. 10 on Billboard's Next Big Sound chart in September 2019. Kardon is married to fellow producer and Dubstep DJ, Sonya Broner, also known by her alias Level Up