Metasonix RK4 Filter / VCO

€330.45 *
Net price: €284.87

Prices incl. VAT plus shipping costs

In stock

  • 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.

180340_1 Metasonix RK6 Resonant Lowpass Filter
€379.19 *
Net price: €326.89
HOT SHIT
NEW STUFF
200087_1 4ms Ensemble Oscillator
€319.73 *
Net price: €275.63
160266_1 Metasonix F-2 preamp / distortion / wah
€531.26 *
Net price: €457.98
NEW STUFF
130284_1 Metasonix R-56 - Tube Reverb
€511.76 *
Net price: €441.17
190017_1 Michigan Synth Works - Temps_Utile
€213.48 *
Net price: €184.03
150011_1 XAOC Devices - Batumi
€271.97 *
Net price: €234.46
HOT SHIT
200065_1 Erica Synths - Black Spring Reverb
€316.81 *
Net price: €273.11
180308_1 Joranalogue - Filter 8
€287.56 *
Net price: €247.90
HOT SHIT
190711_1 4ms Pod 64X HP (powered)
€180.34 *
Net price: €155.47
190300_1 MODOR - Noisy Oscillator
€330.45 *
Net price: €284.87
180372_1 Instruo - Cš-L
€550.76 *
Net price: €474.79
121108_1 WMD Phase Displacement Oscillator Mk2
€388.94 *
Net price: €335.29
160006_1 Hexinverter - Mutant Snare
€261.24 *
Net price: €225.21
130570_1 Hexinverter - Mutant Clap
€242.72 *
Net price: €209.24
160117_1 Hexinverter - Mutant BD9
€261.24 *
Net price: €225.21
150216_1 Mannequins - Cold Mac
€203.73 *
Net price: €175.63
190307_1 Polyend - Poly 2
€340.20 *
Net price: €293.28
190286_1 System 80 - 810
€447.43 *
Net price: €385.72
170102_1 AJH Synth - MiniMod CV Mix / Offset / VCA
From €184.24 *
Net price: €158.83
160238_1 ALM Busy Circuits - SID GUTS DELUXE
€310.96 *
Net price: €268.07
130363_1 JoMoX ModBase09 Bass Drum Module
€388.94 *
Net price: €335.29
121025_9 Sequentix Cirklon with CV- I/O option
€1,759.50 *
Net price: €1,516.81
180530_1 Joranalogue - Link 2
€73.11 *
Net price: €63.03
190482_1 Instruo - Lúbadh
€564.40 *
Net price: €486.55
120712_1 Knas - Ekdahl Moisturizer incl. power supply
€482.52 *
Net price: €415.97
180442_1 L.E.P - Arpopone (Eurorack)
€310.96 *
Net price: €268.07
170012_1 Hexinverter - Mutant Rimshot
€173.51 *
Net price: €149.58
130569_1 Hexinverter - Mutant Hihats
€232.00 *
Net price: €200.00
130568_1 Hexinverter - Mutant Bassdrum
€223.23 *
Net price: €192.44
130566_1 Manhattan Analog - Discrete SVVCF
€262.22 *
Net price: €226.05
130238_1 Epoch Modular - Benjolin
€426.96 *
Net price: €368.07
170206_1 NW2S - O16 Balanced Line Driver
€457.18 *
Net price: €394.12
150063_1 NW2S - IO Balanced
€457.18 *
Net price: €394.12
180495_1 Electrosmith - 2144 LPF
€125.75 *
Net price: €108.41
180318_1 XAOC Devices - Zadar
€301.21 *
Net price: €259.66
130605_1 AJH Synth - MiniMod VCF
From €252.47 *
Net price: €217.65
130606_1 AJH Synth - MiniMod VCA
From €174.49 *
Net price: €150.42
190012_1 2hp - Mix
€105.28 *
Net price: €90.76
NEW STUFF
200101_1 STG Soundlabs Oscillator
€290.49 *
Net price: €250.42
Viewed