Dupertuis Electronique SA

BASTL INSTRUMENTS 1983
The 1983 is a polyphonic MIDI to CV interface with creative voice allocation and automatic tuning capabilities.
Everything in tune and responding to MIDI notes correctly
There are four channels of CV and GATE outputs that can be configured in various Layouts, such as hybrid splits between monophonic and polyphonic voices or velocity, Control Change, aftertouch, triggers, clock or reset.
Automatic tuning
Each channel is able to LISTEN to simple waveforms from the oscillators, and with a single press of the TUNE button, the 1983 maps the response of each connected oscillator across all seven octaves. This way it ensures everything is in tune and with each other and that it responds to the MIDI notes correctly ( A4 = 440 Hz etc.). PURE MAGIC!

CV inputs
The TRANSPOSE jack shifts the outputs by semitones, fifths or octaves and the PORTAMENTO jack sets the glide time by CV.The 1983 always stores the notes played in a legato sequence in a buffer, and the WINDOW jack allows for selecting which of these notes appear at the outputs.
When the UPDATE jack is used, it forces the outputs to update only when a trigger is detected.
This way a MIDI keyboard can be used as an input interface for harmonies and note sets that are further creatively processed with triggers and CV in the modular environment.
Quantizer
The quad Quantizer mode on the 1983 converts input voltages into semitones of scales defined either by playing notes into the MIDI input or by the buttons in the menu. This allows the 1983 to be used tuning correction device (quantizer) without the necessity or using MIDI.
Micro tuning
Default tuning is A = 440Hz in equal temperament, but alternative tuning systems are possible with the µTune feature. It allows working with custom detuning of each semitone in the octave and therefore to work with just intonation and alternative tuning systems.
Layouts
The 1983 has 4 channels of CV and GATE and these Outputs can be configured into several different LAYOUTS:
4-voice polyphony3-voice polyphony 1-voice monophony2 monophonic voices with velocity1 complex monophonic voice4 monophonic voices8 gates4 gates with velocity8 CC channels4-channel QUANTIZER
Features
4 channels of CV and GATELISTEN input per channel for automatic tuningautomatic tuning by a single press of a button (offset & scaling correction)several tuning systems (equal temperament, just intonation, A = 440/432 Hz etc.)LAYOUT selection (4 voice, 3 1 voice, 2 velocity voice, 4×1 voice, 1 voice, 8 gates, 8 CCs, 4 triggers velocity, quantizer)each layout can map outputs of Channel D to MIDI Clock (adjustable divider) and ResetLEARN mode to assign MIDI channel and other propertiesUPDATE jack to quantize outputs to clock or trigger sequencesWINDOW jack to creatively allocate notes in the buffer to available voicesTRANSPOSE CV to shift outputs by semitones, fifths or octavesPORTAMENTO CV to adjust glide timeresponds to MIDI Note On & Off, CC (also Sustain), Velocity, Pitch Bend, Clock, AftertouchµTune scale editing per each semitone in octave
Technical details
7 HPPTC fuse and diode protected 10 pin power connector24mm deeppower consumption 12: < 60mA, -12: <20 mA