x0xi0 bass synth sequencer Brian Castro calibrated x0xb0x modded tb-303 clone

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Brian Castro is the man behind Abstrakt Instruments.

"More info from the web —
'Keyboard
One Octave C-to-C w/Transpose

Performance
Rest, Accent, Slide, Transpose per step
Pattern Mode, up to 16 steps
Track Mode
Keyboard Mode
MIDI Play Mode
Shuffle
Pattern Rotate
Step Nudge
Tap Tempo
Loop Mode
Random Mode
Dinsync In/Out Modes
MIDI In, Out, Thru

Memory/Storage
128 Patterns
64 Tracks

Inputs & Outputs

Audio Inputs & Output
Main output
Headphone output
VCF Output
Mix Input
VCF Input
VCA Input

Control Inputs & Outputs
Gate/CV In
Gate/CV out
Accent In
Accent Out
Slide In
Filter CV In
Accent Sweep Out
MIDI In/Out/Thru
Dinsync In/Out

Oscillator 1
Waveform: Saw & Square (TB-303)
Range: 5 Octaves

Oscillator 2
Waveform: Saw & Square (TB-303)
Range: 6 Octaves, Tuneable -1/+5 Octaves relative to VCO 1

VCO Control
Master Tune: +/-700 Cents
Slide Time
VCO Cross Modulation (Xmod)
Envelope 2 to VCO FM
VCO2 Hard Sync

Noise Source
Pseudo Pink Noise

Source Mixer
VCO 1 Level
VCO 2 Level
Noise Level

Voltage Controlled Filter
Cutoff Frequency
Resonance
Filter Range Switch
Envelope Modulation
Envelope 2 Modulation
VCO2-to-Filter Modulation
Filter Tracking
VCF Overdrive

Filter Envelope
Decay
Accent

Envelope 2
Attack
Decay/Release
Trigger Source: Gate, Accent, Slide, Non-Accent
Type: AD or AR
Shape: Normal & Inverted
ENV2 to VCF Modulation Depth
ONV2 to VCA Modulation Depth
ENV2 to VCO1(2) Modulation Depth
ENV2 Trigger Button

ENV2 to VCO2 Switch

VCA Envelope
Attack, Decay, Sustain, Release
VCA Gate On Switch

Overdrive
On/Off
Amount
Tone
Frequency Response

Sequencer Section'"