The frequency response of the EXG is similar to normal guitar amp equalization. The lows and highs are boosted while the midrange is "scooped" out. The EXG is great for creating a fuller tone that doesn't get muddy, while keeping it clean and clear, letting your guitar stand out in the mix.
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EMG EXG Guitar Expander Control
The manufacturer's warranty covers parts for two years and labor for two years from date of purchase. The warranty excludes damage from misuse, abuse, and contains other exclusions.