Glass Butterfly



Glass Butterfly is the successor to the now discontinued Robot Butterfly multi-fx pedal, the most notable difference is of course that the dry signal path of Glass Butterfly is 100% tube. Outside of that the FV-1 effects processing remains the same, with an 8-way selector switch to go between effects. The controls for the effects are simply labelled as CTRL1, CTRL2, and CTRL3 as the parameter they affect will be different depending on the patch.

Patch Effect CTRL 1 CTRL 2 CTRL 3
CH Chorus Rate Depth Detune
DL Delay Time Feedback Modulation
DT Double Tracker Detune #1 Detune #2 Time
FL Flanger Rate Depth Feedback
PH Phaser Rate Depth Feedback
PS Pitch Shifter Pitch #1 Mix Pitch #2
RV Reverb Dwell Pre-Delay Dampen
TR Tremolo Rate Depth Pitch


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Additional information


Age, Mix, Speed, Swell, Toggle – Heads 1/2/3/4

Footswitch Behavior





1x 12AU7 & 1x 12AT7


Center-negative, like most guitar pedals

Milliamp Draw

900mA @ 9vdc Warmup, 480mA @ 9vdc After Warmup