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Ostrawa is a fully stereo four-channel voltage-controlled mixer featuring a stereo mixing bus, one stereo auxiliary send per channel (switchable between pre and post-VCA) with stereo returns, clickless muting, individual level meters, and a super-clean and DC-coupled signal path designed with high-quality VCA and opamp chips.
Xaoc have carefully crafted Ostrawa’s voltage control response to achieve what they believe to be the optimal user experience found in a Eurorack mixer. The design features an elaborate control circuit that combines the internal voltages generated by the panel potentiometers with external CV over volume and stereo balance. The result is a natural attenuator response that constrains VCA gain to a usable range while minimizing distortion. Ostrawa, a sister module to Xaoc Devices Praga, features similar response characteristics and layout of controls with some functional differences due to its stereo inputs and limited panel space. Multiple Ostrawa and Praga units may be chained for a custom configurable mixing system.
FEATURES
- Full stereo architecture
- Natural volume response
- Channel level indicators
- Stereo auxiliary send and stereo returns
- Clickless channel muting
- Expandable by chaining more units and optional expander modules
Specifications
Width: 20hp
Depth: 46mm
Power: +12V:180mA | -12V:150mA
Manufacturer product page here.
Product manual here.