Metasonix RK4 Filter / VCO

€339.00 *
Net price: €284.87

Prices incl. VAT plus shipping costs

  • 170017
While being used as an oscillator, the RK4 is controlled via its pitch CV input (Hz / v). For... more
Product information "Metasonix RK4 Filter / VCO"

The RK4 is a compact version of the unfortunately no longer available R-54 Supermodule. Like the older brother, it can be used as an oscillator and bandpass filter. During VCO operation, the RK4 emits an exceptionally clean sine wave, thanks its triode-pentode which was placed in a Wien-bridge circuit. By turning a potentiometer, the sine can be morphed into a square wave. The frequency response ranges, in both VCO and VCF operation, from 20 Hz to 2 kHz. Pitch respectively cutoff can be controlled via a knob and a Hz / v connector. An audio input plus level potentiometers complete the module.

In use, the RK4 shines with beefy, warm tube sound. Frequency modulations lead to fierce, yet charming results. Utilized as a filter, the circuit is a dream as well. The bandpass is wide and cuts off frequencies very smoothly. Hi resonance values produce shrill screams. – A truly unique module with tons of character!

While being used as an oscillator, the RK4 is controlled via its pitch CV input (Hz / v). For tuning adjustments, there is a potentiometer. The resonance knob can be employed to morph the waveform from sine to square. Another potentiometer edits the output volume.

For utilizing the RK4 as a bandpass filter, an audio input with level control was implemented in the module. Its tuning potentiometer sets the cutoff frequency, the pitch CV input can be used for modulations.

External videos:

HE: 3
TE: 8
Power consumption +12V: 400
Power consumption -12V: 10
Related links to "Metasonix RK4 Filter / VCO"
"Metasonix RK4 Filter / VCO"
Das RK4 auf der Metasonix-Webseite;http://metasonix.com/index.php/rk4-filter-vco-new
Here is the information available on the brand...... more
Metasonix

As Eric Barbour lost his day-job by the late 1990s, he decided to apply his vast knowledge and expertise in vacuum tubes to make noise making instruments. By now he has earned a reputation of creating some of the most nasty sounding instruments. Not for the faint of heart.

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