Electro-Harmonix Deluxe Memory Man XO Analog Delay Guitar Effects Pedal Musicians love it and collectors cherish it. Nothing can compare to the organic sound of analog delay, especially when it's from the Deluxe Memory Man. Up to 550ms of vibrant echo that rivals tape delay. Lush, spatial chorus and haunting vibrato are just a few of the treats in the Memory Man's sonic smorgasbord. The pedal features the exact same warm analog circuit, with premium, vintage, integrated circuits, all housed in a more pedalboard-friendly enclosure. The Blend control allows you to vary the mix of direct and delayed signals, and the center-position setting equals out both levels. Feedback provides delay repeats, or multiple echoes. Fairly high feedback with short delay settings produces a reverb effect. The Delay control determines the time between direct and delayed signals, and between the repeats when feedback is used. Strange, eerie, and unusual pitch-shift effects can be produced by changing the delay, while playingâ€”especially while using feedback. The Chorus/Vibrato control introduces a modulation in the delay time: slow for chorus, faster for vibrato. This produces a "Doppler" pitch shifting in the delayed signal. A rich, vibrant chorus effect is produced with the switch set to chorus, delay fairly short, blend at the center, chorus set high, and feedback fairly high.