http://www.algomusic.net/ambbass.html

Architecture:
2 Harmonic oscillators offering 11 waveforms each with
phase modulation, ring modulation, sync and a noise
oscillator.
Complex filter with 13 types of filters and x-y grid for
cutoff and resonance.
8 dedicated envelopes to selected targets with 7 types of
velocity curves.
2 BPM synced LFOs with phase modulation.
Portamento with re-triggering, pitch bend amount, MIDI
channel select and master BPM.
3 different forms of distortion.
Velocity sensitive controls with keyboard tracking of phase
modulation and distortion with master volume and boost
controls.
Unique pull down 32 stage sequencer offering piano grid
style editing and complex algorithmic arpeggiator along
with volume and cutoff control for each stage.
4 different effects: Chorus, Phaser, Stereo delay, Digital
reverb.
Dedicated vibrato for modulation wheel.
On board click and learn help system.
Preset information display.
Low CPU.
128 presets by Boris K, David Haupt, Dr Ambient, and Tim C.