Bastl Instruments Quattro Figaro
Quattro Figaro is a 10 HP Eurorack module with four voltage-controlled amplifiers, each with its own CV inverter, plus mixed outputs. Its jack-switch routing between channel pairs makes it a tool for panning, crossfading and voltage-controlled mixing. It has been discontinued.
- 4-channel VCA with gain knob and CV attenuator per channel
- CV inverter output on every channel
- Mixed outputs: -(A+C), -(B+D), A+B+C+D, -(A+B+C+D)
- Jack-switch routing of A to B and C to D for panning/crossfading
- 10 HP, 35 mm deep
Grianghraif
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Nuair a dhíolann duine Bastl Instruments Quattro Figaro, taispeánfar na fógraí agus stair na ndíolachán anseo.
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Quattro Figaro has four VCA channels, A to D. Each channel has a gain knob, a CV input with an attenuator knob, an inverted CV output, a signal input and a signal output. Gain follows the control voltage linearly. Control voltages above 6 V are compressed non-linearly, which comes from the VCA chip, and maximum gain is a little above 2.
Channels A and B, and C and D, are paired through jack switches. With nothing plugged into the signal input of channel B, the signal and the inverted CV from channel A feed channel B automatically, which gives a quick panning or crossfading setup. Plugging a cable into a jack breaks that connection, so every channel can also be used on its own.
Four mixed outputs allow use as a voltage-controlled mixer or stereo panning mixer: -(A+C), -(B+D), A+B+C+D and -(A+B+C+D). The module is 35 mm deep and runs from a 16-pin power connector with PTC fuse and diode protection. It is handmade in Brno, Czech Republic, with an aluminium or oak wood front panel, and a DIY kit (PCB and panel only) was also offered.
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- Bastl Instruments
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- Quattro Figaro
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Inputs
- VCA channels
- 4 (A, B, C, D)
- Signal inputs
- 1 per channel
- CV inputs
- 1 per channel, with attenuator knob
Outputs
- Signal outputs
- 1 per channel
- Inverted CV outputs
- 1 per channel
- Mixed outputs
- -(A+C), -(B+D), A+B+C+D, -(A+B+C+D)
Audio
- Gain control
- Linear to control voltage
- CV compression
- Non-linear above 6 V
- Maximum gain
- A little above 2
- Controls
- Gain knob and CV attenuator knob per channel
Connectivity
- Internal routing
- A to B and C to D via jack switches (signal and inverted CV)
- Power connector
- 16-pin, PTC fuse and diode protected
Power
- Current +12 V
- < 40 mA
- Current -12 V
- < 35 mA
Physical
- Width
- 10 HP
- Depth
- 35 mm
- Front panel
- Aluminium or oak wood
- Made in
- Brno, Czech Republic (handmade)
- Format
- Eurorack
Software
- Documentation
- PDF user manual