★ Mesa/Boogie Overdrive Pedal GRID SLAMMER ★ The deep green glitter enclosure gives off a unique aura! With Mesa/Boogie's future uncertain, supply shortages and price increases are expected?! The GRID-SLAMMER is an overdrive pedal with a boosted gain, and its punchy mid-range and classic sound can enhance various styles of guitar playing. It's truly an overdrive specialist, a pedal that can express expressive and musical overdrive, recognized by many top players. From sweet and delicate breaks to smoldering harmonies, the GRID SLAMMER, with its piercing yet singing overdrive, raises the bar for overdrive expectations. Designed and handmade in Petaluma, California, USA. True Bypass Switch: When not in use, it bypasses the entire circuit, so there is no effect on the sound. GAIN: Gain adjustment covers a wide range, from vintage-style breaks to classic overdrive. LEVEL: Master level control allows boost adjustment up to +20dB. TONE: Tone control function for balanced high-frequency adjustment. ON/OFF is indicated by an LED lamp. Power can be supplied by a 9V battery or by connecting a commercially available AC adapter to the external power jack.