When you install the mod, you'll have a switch to change between modes to pick the right setting for you. It's easier than you think to get both sounds of your Phase 90. You don't need a new pedal! Mod your Phase 90 to sound how YOU want. With just a few solder joints, you can experience both effects. The vintage 'script' logo models had a much warmer and more organic tone than the later 'block' logo versions. The MXR Phase 90 has a magical swirling sound that adds a subtle depth to your tone. Switch between the classic MXR 'script' and modern 'block' sounds instantly View All WOODSTAX - Shop Tonewood by the Piece.View All All Hardware + Parts by Instrument.