AudioRealism Bass Line Pro (ABL Pro) is a monophonic/polyphonic semi-modular synthesizer plug-in with an integrated pattern sequencer. While the unique sound of the Bass Line is well known and has become a standard in the music industry, the Semi modular version builds on its strengths and extends on them to reach new sonic possibilities without losing any of its original expression.

In Performance
ABL Pro is mainly designed to be used as monophonic sequenced type of
instrument. However it can be played polyphonically, or polyphonically
sequenced. The instrument comes with a variety of patches: sequenced,
polyphonic, monophonic, fx, etc.

CV Routing
Most modules send or accept control voltage (CV) which means the signal
path can be modified in real time without any glitches in the audio.
Sequencer has CV Gate/Note output and can be used when playing ABL Pro
in Note mode, monophonic- or polyphonically.

AUX signal processing
ABL Pro can process external signals, for example through its filter.
The AUX envelope follower outputs CV which allows you to patch up
interesting effects. Even limiter and compression type of effects can be
achieved.

Excellent VCF
The instrument contains an excellent self oscillating filter with
tracking and filter modulation from oscillators, and has a 22kHz range
(at 44.1kHz sampling rate).

Tight Envelopes
The envelopes are extremely snappy and evaluated every sample, no
approximations here.

Key features:
* 2 (+1) Oscillators with sawtooth, squarewave, pulse, triangle and
sinus waveforms
* Sync and ring modulation between oscillators
* Noise generator with variable color
* 2 ADSR envelopes
* Full range oscillators with no aliasing
* Non-linear filter with self oscillation and VCF tracking
* Modulation generator with audio rate frequency (can be used as third
oscillator)
* Can be used to process external signals, for example through the VCF
* Stereo Delay unit with modulatable delay time (left & right)
* 32-voice polyphonic mode
* Patch cable system allows additional CV routing
* 500+ preset patches and sequences

Synth specifications:
* 2 Voltage controlled oscillators
* 1 Voltage controlled noise generator
* 1 Modulation Generator with Audio Output, which can be used as 3rd VCO
* 1 Voltage controlled filter (3 filter types, 18dB, 24dBSO and 24dBSO
2xoversampled)
* 2 Envelope generators (Main envelope generator and volume envelope
generator), with voltage control
* Oscillation operator unit (ring and sync between oscillators)
* 1 Envelope follower for AUX signals
* 1 Stereo delay with voltage controlled delay times
* 2 Inverter modules
* 2 Attenuators, one with lag output

Sequencer specifications
* 1 Sequencer with CV Note/Gate output and gate outputs for Slide and
Accent
* 7 octave range
* 64 steps x 128 patterns
* Effects per step: Accent, Slide, Transpose up & down
* Prescale per pattern: 1/16, 1/32, 1/16T and 1/8T

Many of the features from ABL are still there:
* Internal pattern sequencer
* User skinnable
* Full MIDI CC control with learning function
* Rebirth pattern import
* Freebee pattern import/export
* Two MIDI modes (Pattern and Note)

Copy protection:
* Serial hide delivered by e-mail

Formats:
* VST 2.0 for PC and Mac OS X
* Audio Units for Mac OS X

System requirements:
* Windows 2000/XP, P4 1 GHz, 256 Meg RAM or equivalent
* Mac OS X 10.3, G4 1 GHz, 256 Mb RAM or equivalent