- Overdrive adjustment
- Tone adjustment
- Boost level adjustment
- Foot sweep heel down—original signal (no effect)
- Foot sweep toe down—overdrive and boost level (maximum effect)
- Mono in/Mono out
- 9 V in
The Ernie Ball Expression Overdrive delivers everything from a hint of natural tube-amp-like overdrive and rhythm crunch to searing lead tones. It features settings for drive, boost and tone, with a foot-sweepable overdrive control, making it effortless to go from clean to roaring all-out growl and everything in between.
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