Check the listing for details. MXR Reverb M300 Relay True Bypass & Delay Trails Modes Dry Path ( OPEN BOX ). Condition: Used, Made in Taiwan. Listed at 214.80 USD. Each reverb style is as richly detailed as any found in the highest-end rack units and plug-ins, and all you have to do to step through them is push the Tone knob. EPIC is a unique combination of multiple interwoven analog-tone delay lines and complex modulation—perfect for solos from that more shaded part of the lunar landscape.