VariOS 303 Version 1.2 For Product(s): VariOS Designed exclusively for VariOS, the VariOS 303 is an analog-modeled bass synth reminiscent of Roland’s vintage TB-303. You can now set the MIDI receive channel You can now change the appearance of VariOS 303 by choosing [Skin] menu You can now use control changes to edit internal parameters For Operating System(s): MacOSX / MacOS / WindowsXP / Windows2000 / WindowsMe / Windows98