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Keeley DS-1 - angle
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Keeley DS-1 - angle Keeley DS-1 - top Keeley DS-1 - upper

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Keeley Effect Pedals - DS-1 Ultra Mod


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This Keeley DS-1 Ultra Mod is Steve Vai's favorite pedal and it's easy to see why. It's the ultimate Keeley Seeing Eye Mod with extra goodies. The toggle switch allows you to select the Seeing Eye or Ultra mode. The Ultra mode increases the fidelity in high-gain modes and increases the total volume a bit to be used as a front end on a high quality tube amp. We've found the differences between this and the standard Seeing Eye Mod to best be heard through, say, a boutique amp like a Dr. Z MAZ 38 or a Bogner, a little more open and refined. Check out the difference for yourself and see why this Keeley DS-1 Ultra Mod takes the Boss DS-1 to a whole new level.


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We take the time to set up every new guitar, mando, bass, uke, or banjo for every player, whether it was purchased here in Lawrence, Kansas or on our website. Large retailers are content to ship you a guitar right off of the warehouse shelf, while we take pride in the fact that your new instrument will be set up to be truly ready to play - for you.

Call us at 800-747-9980 or send us an email at info@massstreetmusic.com - we're here to help! All of us at Mass Street Music are musicians, and we're dedicated to helping you find exactly what you're looking for. You can also check out our Staff Page if you'd like to email one of us directly.

Any new or used gear $25 or over gets shipped to you for FREE via our favorite carrier, Fed Ex – ground, to all 'lower 48' U.S. states and we offer a 7 day return policy. Alaska and Hawaii, expedited shipping, international shipping are more. We also ship around the globe. Read more about our Shippping.