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The RIDDLE Q-Balls Envelope Filter Pedal for Guitar from Electro-Harmonix is a powerful and precise envelope filter pedal for guitar frequency response. It's a unique sound modifier where the intensity of the effect is controlled by the user's playing dynamics. The volume and dynamic of the incoming audio signal are used to control a swept filter. As the volume increases or decreases so does the frequency of the filter. The filter can deliver tight and smooth control over the complete 80 Hz to 5 kHz range.
This filter features three filter modes, along with Start, Stop, Attack, Decay, Q, and Sensitivity controls.
You can plug in an optional expression pedal to control the filter sweep with your foot.
80 Hz to 5 kHz frequency response tailored for guitar
Optional expression pedal control
Switch selectable analog distortion designed for guitar
Start and Stop sweep control
Low Pass, Band Pass, High Pass filter select
Start and Stop for filter sweep and Q control
Separate Dry and Effect outputs
In the Box
Electro-Harmonix RIDDLE Q-Balls Envelope Filter Pedal for Guitar
9.6VDC-200 Power Supply
Limited 1-Year Warranty
Table of Contents
80 Hz to 5 kHz
1 x Knob: Blend
1 x Switch: Mode (LP, BP, HP)
1 x Knob: Attack
1 x Knob: Decay
1 x Knob: Start
1 x Knob: Stop
1 x Knob: Q
1 x Knob: Sensitivity
1 x Footswitch: Distortion
1 x Footswitch: Bypass
LED, Distortion FSW
LED, Bypass FSW
Input: 710 kΩ
1/4" phone jack, Input
1/4" phone jack, Expression pedal
1/4" phone jack, Effect output
1/4" phone jack, Direct output
DC power supply, 9.6 VDC input
9.6 VDC, 200 mA
4.75 x 5.75 x 2.5" (146 x 121 x 64 mm)
Electro-Harmonix RIDDLE Q-Balls Envelope Filter Pedal for Guitar Review