Bass Line Pro is a monophonic/polyphonic semi-modular synthesizer plug-in with an integrated pattern sequencer. It builds on the original Bass Line's strengths and extends on them to reach new sonic possibilities without losing any of its original expression.

Key features:

• 2 (+1) Oscillators with sawtooth, square wave, 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).

ABL Pro comes in both VST instrument and effect versions for Windows and Mac OS X and costs €145 (~$176). Demo versions are available. All registered owners of ABL can cross grade for €95.