Search Results Found 2 product(s) for Effects Pedals:Seymour Duncan (1-2 of 2) Effects Pedals  |  Seymour Duncan Seymour Duncan Pickup Booster The first effects pedal designed specifically to work together with the pickups in a guitar to achieve optimum gain and resonance for all tonal applications. Works with all musical styles. Price: $79.95 Seymour Duncan Twin Tube Mayhem Pedal SFX-04 High-quality guitar preamp with built in boost. Uses a duet of premium, mil-spec, subminiature, USA-made Phillips-Sylvania 62051 pentode tubes. Great for old school metal, new metal, thrash, death and doom. Price: $229.95