Sul Yoon trained at Seoul National University, then at the Hochschule für Musik und Theater in Munich under Wen Sinn Yang and at the Hochschule für Musik Franz Liszt in Weimar under Wolfgang Emanuel Schmidt. She has participated in the Sommerakademie at the Mozarteum in Salzburg and the Musikakademie in Liechtenstein. This season, she is in the Karajan-Akademie of the Berliner Philharmoniker. She has won second prize at the Buchenau Spring Festival competition, third prize at the Johannes Brahms competition in Austria, and second prize at the Felix Mendelssohn Bartholdy Conservatory Competition. Sul Yoon performs regularly with the Berliner Philharmoniker as a member of the Karajan-Akademie. As a chamber musician, she performs as a member of Trio Beati and of the Wald Ensemble. As a soloist, she has played with orchestras such as the Philharmonisches Orchester Budweis, the Sinfonie Orchester Biel Solothurn, and the Bad Reichenhaller Philharmoniker.