Ernie Ball Expression Overdrive delivers natural tube-like overdrive with more range than ever before. It features settings for drive, boost and tone with a foot-sweepable overdrive control, making it effortless to go from clean to searing lead tones and everything in between, all without taking your hands off the guitar.

Features:
• Incredible tube-like natural overdrive
• Separate control for drive, tone and boost
• Up to +6db boost level
• On-the-fly, dynamic foot-control for ultimate expression
• Newly designed ultra-compact housing