 After its formation Polák decided to leave because of incompatibility, so the two quartets ended up exchanging cellists, with Jarůškova's husband joining the Haas Quartet and Polák joining the Škampa Quartet.Later the second violinist (Gemrotová) was replaced by Marie Fuxová, who in September 2008 was replaced by Eva Karová, the youngest member in the group at 25 years of age (in November 2009); the oldest was only 33.In July 2012, Karová was herself replaced by Marek Zwiebel as second violinist.