Keeley KKBLUE Katana Blues Drive Distortion Effects Pedal The Katana Blues Drive captures the best elements of tubes with a transparency that allows your guitar's full tonal range to shine delivering dynamics that are sensitive to the touch We've taken the legendary tube clarity of our best-selling Katana Boost's JFET stages and blended them together with a unique overdrive circuit that's been influenced by our award-winning overdrive pedal modifications