The Tonebox Skull Crusher is a unique distortion pedal known for its striking skull-shaped enclosure with glowing red LED eyes. Designed to deliver powerful and aggressive distortion tones, it features four selectable voicings—Clear, Ice, Chains, and Body—along with controls for volume, gain, and tone. Built with true bypass switching and a 10dB boost, it was sold exclusively through Guitar Center, making it a rare collector’s piece for tone chasers and pedal enthusiasts alike.