What do top musicians like Jimmy Page, Eddie Van Halen, Brian May, and Eric Johnson have in common? They all used the Echoplex, a device considered a legendary piece of equipment. Originally designed to create delay effects, the Echoplex was famously used as a preamp to "thicken the sound" and "tighten the tone." However, its size and maintenance issues made it less appealing. The Xotic EP-Booster was created to provide easy access to this warm, full-bodied preamp sound. It uses top-quality parts and is designed to withstand the rigors of professional players. It's even more compact than traditional compact effects pedals, making it suitable for the trend towards slimmer gear. The internal dip switches allow for EQ adjustments. The simple "one-knob" design reflects a commitment to immediate usability. - Model Name: EP-Booster - Brand: Xotic USA - Input Jacks: 1/4 inch jack - Output Jacks: 1/4 inch jack - Switch Type: Toggle switch Thank you for viewing.