The Virus B is a virtual analog synthesizer from Access Music GmbH of Germany, released in 1999 as the follow-up to the Virus A. It is a desktop (rackable) module without a keyboard, with improved converters and expanded polyphony. It has two filters per voice and a modulation matrix, and a keyboard version was sold as the Virus KB.
The Access Virus is a series of DSP-based virtual analog synthesizers introduced in 1997 and updated through the TI series. It offers subtractive, phase distortion, and FM synthesis—with wavetable added from the TI generation onward. Formats include rack modules (Virus B, C, TI Snow), keyboard versions (Virus KB, TI Keyboard, TI Polar), and fixed control layouts. It prioritises polyphonic stability, real-time editing, and aggressive tonal character over tactile expressivity or modern integration.