Tone2 was founded in 2005. Tone2 is a an independent brand which develops high quality audio applications for a fair price. The brains behind Tone2 are Markus Feil (bachelor of science in computer science, known from reFX Synthesizers) and the scientist Prof. Dr. Hartmuth Pfitzinger from the Ludwig-Maximilian-University in Germany. They make Gladiator, BiFilter2, FireBird, FilterBank3, BiFilter, ReFX Slayer 2, ReFX Vanguard, etc.