Electro-Harmonix Riddle Q-Balls Envelope Filter Pedal for Guitar

A powerful and precise envelope filter fine-tuned for guitar frequency response!

Sculpt your envelope to reveal a truly expressive tone, with a defined and unique signature. The EHX Riddle Envelope Filter will deliver tight and smooth control over the complete 80 Hz to 5 kHz range, with a consistent and even sweetness. Need some edge? Engage Riddle's analog distortion and dial in anything from subtle bite to dominating crush. You can even plug in an optional expression pedal to control the filter sweep with your foot. With the ability to adjust Q, sweep range, and filter type, you'll also wind up with of the most versatile wahs available.

Blend
Controls the output mix of the dry and effected signal.

Mode
Select between the 3 filter modes.

Attack
Controls how quickly the filter will sweep from the frequency set by the START knob to the frequency set by the STOP knob.

Decay
Controls how sensitive the reset circuit is when falling back from the STOP setting to the START setting.

Start
Sets the frequency that the sweep starts at.

Stop
Sets the frequency that the filter sweeps to.

Sensitivity
Controls the input sensitivity of the envelope filter circuit.

Q
Controls the resonance of the Q.

Bypass Footswitch/Status LED
The footswitch engages/disengages the effect.

Distortion Footswitch/Status LED
This footswitch engages the analog distortion circuitry.

Input Jack
Connect your instrument's output to this 1/4" mono jack.

Expression Pedal Inputitle
An optional expression pedal can be used with the RIDDLE for manual control of the filter.

Effect Out Jack
Connect this mono jack to your amplifier's input.

Direct Out Jack
This is a direct out signal from the input.