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Filter · FTelettronica

FTelettronica RF-20 Resonant Filter

The RF-20 is an analog filter pedal featuring dual lowpass and highpass resonant sections with independent cutoff and resonance controls for each. It includes CV inputs for modulation and integration with modular systems.

  • 16V DC
  • 100 mA
  • True bypass
  • Analog
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The rundown

Highlights

  • Dual lowpass and highpass resonant filters with separate controls
  • Four CV inputs (3.5mm) for modulation and modular integration
  • Input level and balance controls for signal management
  • True bypass operation
  • Requires 16V AC power supply

Best for

Musicians and sound designers using modular systems or seeking complex filter sculpting with CV modulation capabilities.

Quick facts

Power
16V DC
Current draw
100 mA
Bypass
True bypass
Dimensions
132 × 150 mm
Weight
548 g
Controls
LP Cutoff, LP Resonance, HP Cutoff, HP Resonance, Input Level, Balance, 4x CV inputs (3.5mm)
Status
In production

Where to buy FTelettronica RF-20 Resonant Filter

We have no current prices for this pedal yet.

Frequently asked questions

What power does the RF-20 require?

The RF-20 Resonant Filter requires a 16V AC power supply rated for 100 mA.

Does the RF-20 have true bypass?

Yes, the RF-20 Resonant Filter features true bypass.

How many CV inputs does the RF-20 have?

The RF-20 Resonant Filter has four CV inputs using 3.5mm connectors.

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Specs from pedalfilter. Summary written by PedalBro from those specs and public descriptions.

Page last updated September 29, 2026.