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Pitch Shifter · FTelettronica

FTelettronica Schumann PLL

The Schumann PLL is a phase-locked loop harmonizer that generates drone oscillator tones with squarewave intervals ranging from tight to chaotic. It offers extensive control over pitch relationships through its multiplier and divider functions.

  • 9V DC · center −
  • 26 mA
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The rundown

Highlights

  • Phase-locked loop harmonizer with integrated drone oscillator
  • Squarewave intervals adjustable from tight to chaotic character
  • Multiplier and divider controls for pitch manipulation
  • True bypass with momentary and frequency swap switching options
  • Runs on 9V DC with battery compatibility

Best for

Experimental musicians and sound designers seeking unconventional pitch and drone effects with analog character.

Quick facts

Power
9V DC
Current draw
26 mA
Polarity
Center negative
Dimensions
199.9 × 126 × 56.9 mm
Weight
922 g
Controls
Multiplier, Divider, Squarewave, Loop, Drone switches, Momentary, Swap Freq switch
Status
In production

Where to buy FTelettronica Schumann PLL

$326.36 lowest new price · Reverb

Current offers
SellerConditionPriceLink
ReverbNew$326.36View

Prices last checked 19 hours ago. Links to sellers are affiliate links.

Frequently asked questions

What power does the Schumann PLL require?

The Schumann PLL runs on 9V DC at 26 mA with a center-negative connector.

How large is the Schumann PLL?

The Schumann PLL measures 199.9 x 126 x 56.9 mm and weighs 922 grams.

Does the Schumann PLL have true bypass?

Yes, the Schumann PLL features true bypass switching.

Similar pedals

Same type, similar features.

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

Page last updated September 29, 2026.