El Castillo is an arpeggiating reverb that takes pitch-bent reverb to an entirely new level. It uses a unique combination of 3 circuit blocks (reverb, pitch-shift, and delay) to create a highly experimental, ambient reverb.
REVERB The reverb block is the heart of the pedal. It uses the same high quality reverb brick found in my other reverb pedals. It has two controls: Level and Regen. The Level control increases the amount of wet signal, without effecting the dry signal. The Regen control controls the amount of signal fed through the feedback loop. Turing up the Regen knob will increase the decay and also the number or arpeggiations.
PITCH-SHIFT The pitch-shift block is located in the feedback loop of the reverb. Adding a pitch-shift to the feedback signal creates a stair step effect. Each time the signal travels through the feedback loop, it will shift the pitch of the wet signal up or down. The pitch shifting section is controlled by the Quantize mode switch and the Pitch Knob (small, middle knob). More info below about the mode switch
DELAY The delay block is also located inside the feedback loop. It is a simple, single repeat delay that can range from 0-800ms. This feature causes the signal to delay going through the pitch-shift block. With the delay time set at minimum, the stair stepping effect happens very quickly. As you increase the delay time, the pitch intervals are stretched out and it creates a very gradual pitch arpeggiation. The delay length is determined by the Stretch knob.
MODES- El Castillo has 2 modes of operation: Un-Quantized and Quantized. The toggle switch selects the mode and determines the function of the Pitch knob.
In the Un-Quantized mode (toggle to the left), the pitch knob has a free-range and can select any pitch interval between -1 octave and +1 octave. At 12 oclock, there is zero pitch-shift.
In the Quantized mode (toggle to the right), the pitch-shift is locked to -1 octave and +1 Octave. Turning the pitch knob crossfades between the two octave shifts to allow both to be heard at once or separately. Turning the knob fully to the left provides only octave down intervals. Turning the knob to the right provides only octave up intervals (traditional shimmer). At 12 oclock, there is a 50/50 blend of octave up and octave down intervals.