Access Virus B (1999–2002)
The German-engineered digital synth that survived the DAW revolution and helped lead it.
The Access Virus B hit studios in 1999. It was a virtual analog synth in a crowded market, and it made the case that hardware could work alongside computer-based music production and improve it. It was built in Germany, with a sound that sat between vintage analog warmth and digital clarity. Electronic producers, film scorers and dance music people picked it up while the way music was made was shifting. Pro Tools, Cubase and Logic were moving from novelties to necessities - and the Virus B arrived with USB and optional FireWire connectivity, which made it one of the first synths designed for the modern DAW studio.
Artists from BT to Sasha to Moby used the Virus B, and they trusted it. It had 24-voice polyphony, which was generous for the time. Each voice had a triple-oscillator architecture with deep sound design potential. The onboard effects engine was good enough that you could print a mix-ready track straight from the synth. The sound sealed the deal: rich, punchy and harmonically complex, with filters that went from smooth to screaming acid with a twist of the cutoff knob. If the Roland JP-8000 was the populist face of virtual analog, the Virus B was its cerebral, slightly intimidating older sibling.
Specifications
| Polyphony | 24 voices |
| Oscillators per Voice | 3 |
| Filter Types | 24dB/oct resonant low-pass, 12dB/oct low-pass, 6dB/oct high-pass, 12dB/oct band-pass |
| Filter Frequency Range | 10 Hz to 20 kHz |
| Envelope Generators | 3 (2 ADSR, 1 AD) |
| LFO Count | 3 |
| LFO Waveforms | Sine, triangle, square, sawtooth, sample & hold, noise |
| Effects | Reverb, chorus, delay, distortion, EQ, phaser, flanger |
| Audio Inputs | 1 stereo line input |
| Audio Outputs | 2 balanced 1/4" TRS (L/R), 1 headphone out |
| Digital Connectivity | USB 1.1, FireWire (via optional card) |
| MIDI | In, Out, Thru |
| Display | 240x64 pixel backlit graphical LCD |
| Dimensions | 483 mm x 300 mm x 65 mm |
| Weight | 5.5 kg |
| Power Supply | External 15 V DC, 1.5 A |
Key Features
Start with the 24-voice virtual analog engine with three oscillators per voice. It was a big leap over the original Virus A, and it was about density as much as note count. You could stack the three oscillators thick, detune them into a wall of sound, and still have polyphony left for chords. Each oscillator could generate saw, square, pulse and noise waveforms, with pulse-width modulation and oscillator sync. That covers classic analog textures and some entirely new ones.
The multi-mode resonant filters are where the Virus B shines. There are four selectable types, including a 24dB/oct resonant low-pass that can self-oscillate. It handles everything from deep Moog-style bass to brittle FM-like tones. The 10 Hz to 20 kHz frequency range covers sub-bass and airy highs equally well.
The integrated multi-effects processor was a big deal. This was more than reverb and chorus tacked on - the effects engine was studio-grade. You could run reverb and delay in series, add distortion to fatten up leads, or use phaser and flanger for psychedelic sweeps. One limit: you couldn't run a global delay and reverb simultaneously, which annoyed some users until the TI models sorted it out. The EQ was surgical enough to shape tones before they left the synth.
The USB and FireWire connectivity (via optional card) felt like science fiction in 1999. It allowed direct integration with DAWs for MIDI and even audio streaming (with FireWire). Producers could treat the Virus B like a high-end sound module tightly synchronized with their computer, which meant no more MIDI jitter headaches.
The real-time control and feedback via 240x64 LCD is small by today's standards, but the backlit graphical display was a revelation at the time. It showed patch names, modulation routing and real-time parameter changes. Deep editing was far less guesswork than on synths with single-line displays.
Historical Context
The late 1990s were a turbulent time for hardware synthesizers. Analog was still in the nostalgic shadows, digital workstations like the Korg Trinity were fading, and software synths like Native Instruments’ Reaktor were proving that powerful synthesis could live inside a computer. The market was skeptical: a hardware box had to justify its cost when a $500 soundcard and a plugin could do “enough.” The Access Virus (1997-1999), the B’s predecessor, had already raised eyebrows with its sound, but the Virus B answered with a resounding yes - if the hardware was fast, deep and integrated.
The Virus B launched into a battlefield of digital synths. The Novation Supernova II offered 24-voice polyphony and a generous effects suite of its own (and let you run more effects at once, to be fair), but it lacked the Virus B’s computer integration and slightly more aggressive sonic character. The Roland JP-8000 had captured hearts with its supersaw, but it maxed out at 16 voices and felt more like a performance synth than a studio powerhouse. The Virus B felt like a tool - engineered, reliable and sonically versatile.
Its success paved the way for the Access Virus C (2002-2004) and later the Access Virus TI (2004-2013), which added motorized faders and expanded modulation matrices. It is also built like a tank and designed for longevity.
Collectibility & Value
Today, the Virus B is uncommon but not rare. Exact production numbers remain undisclosed, but estimates suggest several thousand units, so they surface regularly on the used market, but their desirability keeps prices firm. As of 2025, a fully functional Virus B in good condition typically sells for $1200 to $1800 USD, with units including the optional FireWire card or original packaging commanding premiums. The keyboard-equipped Virus KB variant (2000) is slightly more sought after due to its all-in-one convenience, though its weight (thanks to that 76-key Fatar keybed) makes it less popular with rack-mount purists. On the KB, some front-panel functions like Transpose only affect the internal sound engine, not the MIDI output - a quirky holdover from its development.
Collectors should watch for two well-documented issues. First, the external 15V DC power supply is prone to failure after two decades of use. Many have failed silently, taking the synth with them, so verify the PSU outputs clean power before purchase. Second, the backlit LCD can degrade over time, leading to dim displays, ghosting, or complete failure. Replacement screens are available but require careful soldering. When buying, test all front-panel buttons, the encoder knob, and audio inputs/outputs - especially if you plan to use the line input for processing external signals, a beloved Virus B trick.
The Virus B remains a functional centerpiece in many modern studios. Its basses, leads and atmospheric pads still cut through mixes. Unlike software, it has no loading screens and no CPU spikes. It also has a killer distortion effect.
Market Value
┌──────────────────────────────────────────────────────────────────────────┐ │ ACCESS VIRUS B Aug 2026 │ ├──────────────────────────────────────────────────────────────────────────┤ │ High $8,834 Latest $7 │ │ Median $7,936 Trend — │ │ Low $7 Volume ~1/mo │ ├──────────────────────────────────────────────────────────────────────────┤ │ $9,000 ┤ │ │ │. . │ │ │ │ │ $5,143 ┤ │ │ │ │ │ │ │ │ │ │ │ $0 ┤ . .│ │ ├─────────────────────────────────────────────────────────────────│ │ vol │█ █ █ █│ │ └─────────────────────────────────────────────────────────────────│ │ 2026-04 2026-06 2026-07│ └──────────────────────────────────────────────────────────────────────────┘
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