via this auction
![](https://1.bp.blogspot.com/-wEqMg6TrKoc/WodDlR6HyyI/AAAAAAALeGw/TT-b2Hzs6F4uwAkEMMcDxgIj19wvRZBfwCLcBGAs/s640/2.jpg)
It is an analog monophonic bass synthesizer with MIDI implementation to allow you to create 303-like bass lines from your sequencer.
Its single VCO offers the same two basic waveforms as the TB-303: a sawtooth and square wave which can be mixed together for a
more interesting tone than the 303 could originally produce.
VCO tuning,
Filter frequency cutoff
Resonance
Envelope mod amount
Envelope decay time
Accent intensity
24dB lowpass filter that also creates 18dB character
Auto-slide function
Separate input for filtering external signals"