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Eurorack (3U) form factor - 6HP width
and it’s also used to navigate through the menus
keyboard ranges
The RK3 is optimized for general use in the professional modular synthesizer studio
Controls are: Drive Drive Tone Volume
Metasonix RK4 Oscillator/Filter Synthesizer Eurorack (3U) form factor -The RK 4 is an 8hp Eurorack module replicating the basic function of the older R 54 "Supermodule". It is a vacuum tube (electronic valve) Wien bridge bandpass filter which can also be used as an oscillator. Tuning is effected by a dual element Vactrol optocoupler. TUNING tunes the circuit through it's full sweep range, from below 20Hz to more than 5kHz, manually. RESONANCE controls the resonance when used as a filter, and sets adjusts the waveform in
