Designed exclusively for VariOS, the VariOS 303 is an analog-modeled bass synth reminiscent of Roland's vintage TB-303. All the original controls are provided, including the step sequencer and "Slide" parameter. But thanks to the power of Roland's R-Core technology, this bass synth has been updated to include an impressive collection of effects designed to give you more aggressive sounds. These include a compressor, overdrive/distortion, chorus, delay and 3-band EQ—all connected in serial. What's more, there are now two ways to create patterns. Choose from the classic step sequencing of the original, or use the new Slider Pattern screen for easier programming.