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MXR, is a Rochester, New York-based manufacturer of effects pedals, co-founded in 1972 by Keith Barr and Terry Sherwood and incorporated as MXR Innovations, Inc. in 1974. The MXR trademark is now owned by Jim Dunlop, which continues to produce the original effects units along with new additions to the line. Their official website is MXR.com.

A directory of user manuals and instructions for MXR products can be found below. MXR products are patented and trademarked under the brand Dunlop Manufacturing, Inc.

Contact Info:

Address: P.O. Box 846 Benicia, CA 94510
Phone: (707) 745-2722

MXR MB301 Bass Synth User Guide

Discover the power of the MB301 Bass Synth with this comprehensive user manual. Learn how to unlock intergalactic grooves and vintage analog-style vibes for your bass, including features like additional oscillators, cutoff frequency control, and freezing notes. Master the art of funk with MXR's innovative bass synth technology.