- Model Name: ECHO 300 - Color: Green - Function: Echo - Power: 9V - Made in: USA Thank you for viewing. This is a rare effect pedal from an American boutique pedal brand, with a Showa-retro design. It has a dark and thick sound, the quintessential analog delay, similar to the BOSS DM-2 and Way Huge Aqua Puss. Also, the extremely thick oscillation sound is noteworthy, like a beam from a retro robot design. Due to the prevention of parts replacement, please understand that this item is non-refundable and non-returnable.