The Wonderlove was inspired by the music and sounds of Stevie Wonder, who popularized the envelope filter effect on "Higher Ground." This is the most complete envelope controlled filter available, and its wide frequency response and control setup ensure that it sounds great with any instrument. New features for v2: 2nd footswitch toggles between envelope and expression pedal control (Dunlop DVP3 recommended) All jacks now top-mounted for easier pedalboard mounting. External toggle for true or buffered bypass selection.

Product Page

Review by Horn FX

Review by Premier Guitar

Demo by Premier Guitar

Official Product Video

Wonderlove V2 Deluxe

The 3 Leaf Audio Groove Regulator claims to be one of the most versatile envelope filters on the market today. Its circuit is derived from the infamous and discontinued Lovetone Meatball. The large frequency and dynamic range makes it equally suitable for bass, guitar, keyboards or synths, samplers and general studio use.

Review by effectsdatabase.com Bieke

Manual

Demo by Bryan R Tyler

Demo by bassfuzzcom

Groove Regulator

Proton MK4

The Chromatron is the result of 10 years tweaking, refining and reimagining the state variable filter circuit. It is an
optically-controlled analog filter that can switch between envelope control and manual control via expression pedal
with the push of a button. The envelope detector is an original design, producing a musical filter response that spans a
broad range of tones from vintage quack to future-synth psychedelica. 

Review by PremierGuitar.com

Demo by The Sound Parcel

Demo by Mike Hermans

Chromatron

Japan-Stil, 1 von nur 50 internationale Sammler-Stücken 

Japanese style, 1 of only 50 international collector pieces 

Demo by  Marc-Antoine Forget - Low-End Reviews

Demo by BassTheWorld

Official Website

Review by Talk Bass.com